CN210603518U - Standard test piece for calibrating air flow meter of building curtain wall testing machine - Google Patents
Standard test piece for calibrating air flow meter of building curtain wall testing machine Download PDFInfo
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- CN210603518U CN210603518U CN201921234780.0U CN201921234780U CN210603518U CN 210603518 U CN210603518 U CN 210603518U CN 201921234780 U CN201921234780 U CN 201921234780U CN 210603518 U CN210603518 U CN 210603518U
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Abstract
The utility model relates to a building curtain testing machine air flow meter standard test piece for calibration, including the base member, be provided with four ventilative punch combination on the base member, every ventilative punch combination all includes four interval arrangement's bleeder vent, and wherein two ventilative punch combination are first ventilative punch combination, and two remaining ventilative punch combination are the ventilative punch combination of second respectively, and the sectional area of a bleeder vent in the first ventilative punch combination is 314mm2The sum of the sectional areas of the remaining three air holes is 4710mm2(ii) a The cross section area of one air vent in the second air vent group is 1256 mm2The sum of the sectional areas of the rest three air holes is 3768 mm2. The utility model provides a can reduce ventilativeBuilding curtain testing machine air flow meter calibration of hole trompil quantity is with standard test piece.
Description
Technical Field
The utility model relates to a building curtain air flowmeter calibration in the calibration verification field uses standard test piece.
Background
For building components such as doors and windows, glass curtain walls and the like, a building component testing machine is required to detect the air tightness, water tightness and wind pressure resistance of the building components, and reference is made to GB/t7106 "method for detecting air tightness, water tightness and wind pressure resistance of external building doors and windows", which is specified in detail in the international 5.1, and shown in fig. 1: the building component testing machine comprises a pressure box a, an air supply device d is arranged on a box plate on the rear side of the pressure box, an installation frame i is arranged on the front side of the pressure box, an installation opening for installing a building component g is formed in the installation frame, a buckling box h is buckled on the front side of the installation frame, a sealing strip j is arranged between the buckling box and the installation frame, and an air flow device, namely an air flow meter f, for detecting the air tightness of the building component is arranged on the buckling box.
When the air leakage detection device is used, the building component is installed on the installation opening of the installation frame, the air supply equipment supplies air into the pressure box, and the air leakage amount detected by the air flow meter is used for detecting the air tightness of the building component. According to the standard, in order to ensure the test accuracy of the building element testing machine, the air flow meter is required to be calibrated periodically (not longer than 6 months), the calibration method is as disclosed in the standard appendix B of the 'air flow measurement system verification method', as shown in figure 2, a standard test piece B is installed at the installation opening of the installation frame a of the building element testing machine during calibration, the standard test piece comprises a stainless steel plate with the thickness of 3mm and the specification of 500mm x 500mm, and 16 air holes c with the diameter of 20mm are arrayed on the stainless steel plate.
The B.6 verification method in appendix B shows that B.6.1 seals all the open pores with adhesive tapes, sequentially pressurizes according to the test requirements of the standard 8.2-8.3, records the wind speed value under the corresponding pressure and converts the wind speed value into the air permeability value under the standard state to serve as the additional air permeability. And B.6.2, opening the sealing adhesive tape in sequence, pressurizing according to the sequence of holes 1, 2, 4, 8 and 16 and the sequence of the test requirements of 9.1 respectively, recording the wind speed value under the corresponding pressure and converting the wind speed value into the total air permeability value under the standard state. B.6.3 repeating the steps B.6.1 and B.6.2 for 2 times to obtain 3 verification results, wherein the different opening numbers correspond to the air flow values in the table B.1, and the theoretical calculation value of the air flow values of the different openings in the table B.1 is 10.31m when one opening is used3H, air flow value of 19.89m at two openings3H, air flow value at four openings of 39.35m3H, air flow value of 79.63m at eight openings3H, air flow value of 154.59 m for sixteen openings3And h, comparing the standard value with the reading of the air flow meter of the testing machine of the testing component, and correcting when the error exceeds 5 percent.
However, for the building curtain wall, the volume of the building curtain wall is larger than that of the door and window, and the range of the air flow meter is wider, so that the standard test piece for calibrating the air flow meter is shown in fig. 3: the standard test piece b comprises a mounting plate, 64 air holes c with the diameter of 20mm are arranged on the mounting plate in an array mode, when an air flow meter of the building curtain wall testing machine is calibrated, the standard test piece b is mounted on a mounting frame a on a pressure box of the building curtain wall testing machine, and sealing tapes need to be opened in sequence according to the sequence of 1, 2, 4, 8, 16, 32 and 64 holes, so that the air flow meter of the building curtain wall testing machine is calibrated.
The existing air flow meter calibration method has the problems that: in order to finish the calibration of the air flow meter of the building curtain wall testing machine, 64 holes are required to be formed in one substrate, the number of the holes is large, the requirement on the strength of the substrate is high, and the manufacturing difficulty of the substrate is also large; in addition, the standard test piece needs to provide various opening number states aiming at the standard, the prior art is realized by opening the buckling box and then plugging a hole which does not need to be opened through the adhesive tape, the size of the buckling box is large, the size of the buckling box is larger for the glass curtain wall testing machine, the buckling box needs to be frequently opened in the whole calibration process, the adhesive tape is frequently removed and unsealed, the working strength is very high, and the calibration efficiency is extremely poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can reduce building curtain testing machine air flow meter standard test piece for calibration of bleeder vent trompil quantity.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
the standard test piece for calibrating the air flow meter of the building curtain wall testing machine comprises a base body, wherein four vent hole groups are arranged on the base body, each vent hole group comprises four air holes which are arranged at intervals, two vent hole groups are first vent hole groups, the rest two vent hole groups are second vent hole groups respectively, the sectional area of one air hole in the first vent hole group is 314mm2, and the sum of the sectional areas of the rest three air holes is 4710mm 2; the sectional area of one air hole in the second air hole group is 1256 mm2, and the sum of the sectional areas of the rest three air holes is 3768 mm 2.
The ventilation holes with the sectional area of 314mm2 in the first ventilation hole group are circular ventilation holes with the diameter of 20 mm.
And each vent hole in the three vent holes of which the sum of the sectional areas is 4710mm2 in the first vent hole group is a circular vent hole with the same diameter.
The four air holes in the second air hole group are all circular air holes with the same diameter.
The four air vent groups are arranged at intervals along the vertical direction, and the four air vents in each air vent group are arranged at intervals along the left and right directions.
And plugging valves for plugging corresponding air holes are arranged at the air holes of each air hole group, in the first air hole group, the plugging valve corresponding to one air hole with the sectional area of 314mm2 is driven by a first valve driving mechanism, and the three plugging valves corresponding to three air holes with the sum of the sectional areas of 4710mm2 are driven by the same second valve driving mechanism.
In the second vent hole group, the plugging valve corresponding to the left-most vent hole is driven by a single third valve driving mechanism, and the three plugging valves corresponding to the right-most three vent holes are driven by the same fourth valve driving mechanism.
Each shutoff valve links to each other with the base member is articulated respectively, the articulated axis of shutoff valve extends the setting along left right direction, be provided with between shutoff valve and the base member and be used for forcing the shutoff valve to close the reset torsion spring that corresponds the bleeder vent, each valve actuating mechanism all includes steering wheel and the transmission shaft that extends along left right direction with the axis of rotation that the steering wheel links to each other, the transmission shaft passes through the stay cord and is connected in order to open the shutoff valve when the transmission shaft rotates, the stay cord is connected in the one end that articulated axis was kept away from to the shutoff valve.
The utility model has the advantages that: aiming at the sequences of 1, 2, 4, 8, 16, 32 and 64 holes in the prior art, the holes are fundamentally different in air-permeable sectional area, the diameter of each air-permeable hole in the prior art is 20mm, and the corresponding air-permeable area is 314mm when 1 hole is formed22 holes are correspondingly 628 mm2Corresponding to 1256 mm when 4 holes are drilled2And the corresponding ventilation area is 2512 mm when 8 holes are formed2And the corresponding ventilation area is 5024 mm when 16 holes are formed2And the corresponding ventilation area is 10048 mm when 32 holes are formed2And the corresponding air permeable area is 20096 mm when 64 holes are formed2. The utility model discloses in, only need set up four ventilative punch combination, sixteen bleeder vents altogether can satisfy the calibration demand to building curtain testing machine air flow meter, and the sectional area of opening in one of them first ventilative punch combination is 314mm2The air holes can meet the air permeability requirement of 1 hole in the prior art; the cross-sectional area of the opening of the two first air-permeable hole groups is 314mm2The air holes can meet the air permeability requirement of 2 holes in the prior art; the cross section area of the second ventilation hole group is 1256 mm2The air holes can meet the ventilation requirement of 4 holes in the prior art; the sectional area of the two air vent groups is 1256 mm2The air holes can meet the air permeability requirement of 8 holes in the prior art; the four air holes in any one air hole group are opened, so that the air permeability requirement of 16 holes in the prior art can be met; each air hole in any two air hole groups is opened, so that the air permeability requirement in 32 hole forming in the prior art can be met; the ventilation holes in all the ventilation hole groups are opened, so that the ventilation requirement of 64 holes in the prior art can be met. The utility model discloses use sixteen bleeder vents can satisfy each ventilative area requirement of 64 bleeder vents among the prior art, and trompil quantity reaches the reduction, helps reducing the manufacturing degree of difficulty of standard test piece.
Drawings
FIG. 1 is a diagram of a state of use of a testing machine for construction members in the background art of the present invention;
FIG. 2 is a diagram of a state of use of a standard test piece corresponding to the door and window testing machine in the background art of the present invention;
FIG. 3 is a diagram of a state of use of a standard test piece corresponding to the building curtain wall testing machine in the background art of the present invention;
fig. 4 is a schematic structural view of an embodiment of the present invention;
FIG. 5 is an enlarged view at B in FIG. 4;
fig. 6 is a perspective view of fig. 4.
Detailed Description
The embodiment of the standard test piece for calibrating the air flow meter of the building curtain wall testing machine is shown in FIGS. 4-6: a base body 4 for installing in installing department on the installation frame of building curtain wall testing machine including platelike structure is provided with four ventilative punch combination on the base body, and each ventilative punch combination is arranged along upper and lower direction interval, and every ventilative punch combination all includes four bleeder vents 5 along left and right sides direction interval arrangement, and four ventilative punch combinations totally sixteen bleeder vents are array form and distribute.
In this embodiment, the two upper vent groups are both the first vent group 6, the two lower vent groups are both the second vent group 7, each vent hole is defined as a first vent hole, a second vent hole, a third vent hole and a fourth vent hole from left to right in each vent hole group, and the first vent hole has a cross-sectional area of 314mm in the first vent group 62The diameter of the first air hole is 20mm, and the sum of the sectional areas of the second, third and fourth air holes is 4710mm2The cross-sectional area of the second, third and fourth air holes is 1570 mm2And the diameters of the second air hole, the third air hole and the fourth air hole are 44.7 mm. The four air holes in the second air hole group are all circular air holes with the same diameter, and the sum of the sectional areas of the four air holes in the second air hole group is 5024 mm2I.e. the cross section area of each air hole is 1256 mm2The diameter of each air hole is 40 mm.
The base body is further provided with plugging valves 8 which are arranged in one-to-one correspondence with the air holes, the plugging valves are used for plugging the corresponding air holes, in the embodiment, the upper ends of the plugging valves are hinged to the base body, the hinge axes of the plugging valves extend in the left-right direction, and reset torsion springs 9 which force the plugging valves to have a tendency of rotating towards the direction of the corresponding air holes of the plugging are arranged between the plugging valves and the base body. In the first vent hole group, the plugging valve corresponding to the first vent hole is driven by a first valve driving mechanism 3, and the three plugging valves corresponding to the second vent hole, the third vent hole and the fourth vent hole are driven by the same second valve driving mechanism 10; in the second vent hole group, the plugging valve corresponding to the first vent hole is driven by a single third valve driving mechanism 11, and the three plugging valves corresponding to the second vent hole, the third vent hole and the fourth vent hole are driven by the same fourth valve driving mechanism 12.
In this embodiment, each valve driving mechanism is an electric valve driving mechanism, and each valve driving mechanism includes a steering engine 17 and a transmission shaft extending along a left-right direction along an axis connected to the steering engine 17, as shown in fig. 4, item 2 represents a first transmission shaft of a first valve driving mechanism, item 13 represents a second transmission shaft of a second valve driving mechanism 10, item 14 represents a third transmission shaft of a third valve driving mechanism 11, item 15 represents a fourth transmission shaft of a fourth valve driving mechanism 12, the length of the second transmission shaft 13 is longer than that of the first transmission shaft 2, the length of the fourth transmission shaft 15 is longer than that of the third transmission shaft 14, the second transmission shaft 13 and the fourth transmission shaft 15 span three plugging valves 8, each transmission shaft is connected to a corresponding plugging valve through a pull rope 16, the pull rope is connected to an end of the plugging valve away from a hinge axis, and when the transmission shafts rotate, the pull rope is wound on the transmission shafts, thereby realizing opening the plugging valve. In this embodiment, the first transmission shaft and the second transmission shaft are coaxially arranged at intervals, the third transmission shaft and the fourth transmission shaft are coaxially arranged at intervals, the adjacent ends of the first transmission shaft and the second transmission shaft share one supporting seat, and the adjacent ends of the third transmission shaft and the fourth transmission shaft share one supporting seat, that is, the adjacent ends of the first transmission shaft, the second transmission shaft, the third transmission shaft and the fourth transmission shaft are respectively rotatably assembled at two ends of the mounting hole on the corresponding supporting seat.
The utility model discloses in, through the selection to each bleeder vent sectional area for only need 16 holes just can satisfy the various state demands in 64 holes among the prior art, reduced trompil quantity and the processing degree of difficulty on the standard test piece. The closing and opening actions of the corresponding plugging valve are realized through the matching of the weight driving mechanism and the reset torsion spring, the air holes are not required to be plugged and opened through manual glue removing and sealing tape removing, the buckle box is not required to be frequently removed and disassembled, and the calibration working strength of the air flow meter is greatly reduced; simultaneously, three shutoff valves of second valve actuating mechanism, fourth valve actuating mechanism drive simultaneously help saving the use of steering wheel, reduce the degree of difficulty of arranging of product cost and steering wheel, and the bleeder vent of the three shutoff valves that every long transmission shaft corresponds is the constant diameter, therefore the shutoff valve size that corresponds is unanimous, is favorable to guaranteeing the stability when transmission shaft moves. In other embodiments of the present invention: each plugging valve can also be provided with a valve driving mechanism in a one-to-one correspondence manner; a steering engine shaft of a steering engine of the valve driving mechanism can also be directly connected with the plugging valve to drive the plugging valve to rotate; the valve driving mechanism can also be a pneumatic driving mechanism or a hydraulic driving mechanism, for example, a pneumatic cylinder or a hydraulic cylinder is used for pushing the plugging valve open; the closing and the opening of the plugging valve can be realized by a valve driving mechanism; each air hole can be not a circular air hole as long as the requirement of the corresponding sectional area is met.
Claims (8)
1. Standard test piece is used in calibration of building curtain testing machine air flowmeter, including the base member, its characterized in that: the base body is provided with four vent hole groups, each vent hole group comprises four vent holes which are arranged at intervals, two vent hole groups are first vent hole groups, the rest two vent hole groups are second vent hole groups respectively, the sectional area of one vent hole in the first vent hole group is 314mm2, and the sum of the sectional areas of the rest three vent holes is 4710mm 2; the sectional area of one air hole in the second air hole group is 1256 mm2, and the sum of the sectional areas of the rest three air holes is 3768 mm 2.
2. The standard test piece for calibrating the air flow meter of the building curtain wall testing machine according to claim 1, which is characterized in that: the ventilation holes with the sectional area of 314mm2 in the first ventilation hole group are circular ventilation holes with the diameter of 20 mm.
3. The standard test piece for calibrating the air flow meter of the building curtain wall testing machine according to claim 1, which is characterized in that: and each vent hole in the three vent holes of which the sum of the sectional areas is 4710mm2 in the first vent hole group is a circular vent hole with the same diameter.
4. The standard test piece for calibrating the air flow meter of the building curtain wall testing machine according to claim 1, which is characterized in that: the four air holes in the second air hole group are all circular air holes with the same diameter.
5. The standard test piece for calibrating the air flow meter of the building curtain wall testing machine according to claim 4, is characterized in that: the four air vent groups are arranged at intervals along the vertical direction, and the four air vents in each air vent group are arranged at intervals along the left and right directions.
6. The standard test piece for calibrating the air flow meter of the building curtain wall testing machine according to claim 5, is characterized in that: and plugging valves for plugging corresponding air holes are arranged at the air holes of each air hole group, in the first air hole group, the plugging valve corresponding to one air hole with the sectional area of 314mm2 is driven by a first valve driving mechanism, and the three plugging valves corresponding to three air holes with the sum of the sectional areas of 4710mm2 are driven by the same second valve driving mechanism.
7. The standard test piece for calibrating the air flow meter of the building curtain wall testing machine according to claim 6, is characterized in that: in the second vent hole group, the plugging valve corresponding to the left-most vent hole is driven by a single third valve driving mechanism, and the three plugging valves corresponding to the right-most three vent holes are driven by the same fourth valve driving mechanism.
8. The standard test piece for calibrating the air flow meter of the building curtain wall testing machine according to any one of claims 5 to 7, is characterized in that: each shutoff valve links to each other with the base member is articulated respectively, the articulated axis of shutoff valve extends the setting along left right direction, be provided with between shutoff valve and the base member and be used for forcing the shutoff valve to close the reset torsion spring that corresponds the bleeder vent, each valve actuating mechanism all includes steering wheel and the transmission shaft that extends along left right direction with the axis of rotation that the steering wheel links to each other, the transmission shaft passes through the stay cord and is connected in order to open the shutoff valve when the transmission shaft rotates, the stay cord is connected in the one end that articulated axis was kept away from to the shutoff valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921234780.0U CN210603518U (en) | 2019-08-01 | 2019-08-01 | Standard test piece for calibrating air flow meter of building curtain wall testing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921234780.0U CN210603518U (en) | 2019-08-01 | 2019-08-01 | Standard test piece for calibrating air flow meter of building curtain wall testing machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398278A (en) * | 2019-08-01 | 2019-11-01 | 河南牛帕力学工程研究院 | A kind of building curtain wall testing machine air flow meter calibration standard test specimen |
| CN110398278B (en) * | 2019-08-01 | 2024-07-16 | 遵义市众欣建筑材料检测有限公司 | Standard test piece for calibrating air flow meter of building curtain wall testing machine |
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2019
- 2019-08-01 CN CN201921234780.0U patent/CN210603518U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398278A (en) * | 2019-08-01 | 2019-11-01 | 河南牛帕力学工程研究院 | A kind of building curtain wall testing machine air flow meter calibration standard test specimen |
| CN110398278B (en) * | 2019-08-01 | 2024-07-16 | 遵义市众欣建筑材料检测有限公司 | Standard test piece for calibrating air flow meter of building curtain wall testing machine |
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Effective date of registration: 20220922 Address after: No. B9-3113, Phase III, Wuzhou City, Zhongyuan West Road, Xingyang City, Zhengzhou City, Henan Province, 450100 Patentee after: Henan Yangcheng Industrial Equipment Co.,Ltd. Address before: Room 2403, 24 / F, building 1, 238 Tongbai South Road, Zhongyuan District, Zhengzhou City, Henan Province, 450000 Patentee before: Henan Niupa Institute of Mechanical Engineering |