CN112444473A - Method for detecting air permeation quantity of curtain wall opening fan - Google Patents
Method for detecting air permeation quantity of curtain wall opening fan Download PDFInfo
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- CN112444473A CN112444473A CN202011344937.2A CN202011344937A CN112444473A CN 112444473 A CN112444473 A CN 112444473A CN 202011344937 A CN202011344937 A CN 202011344937A CN 112444473 A CN112444473 A CN 112444473A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000003068 static effect Effects 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims description 40
- 238000001514 detection method Methods 0.000 claims description 30
- 238000004891 communication Methods 0.000 claims description 28
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims description 2
- 238000001764 infiltration Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 description 11
- 239000011148 porous material Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000025518 detection of mechanical stimulus involved in sensory perception of wind Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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Abstract
The invention discloses a method for detecting air permeation quantity of a curtain wall opening fan, which comprises the following steps: an air collecting box is arranged at the outer side part of the curtain wall opening sash to be tested; installing a static pressure box at the inner side part of the curtain wall opening sash to be tested; measuring the additional air permeation quantity of the curtain wall opening fan to be measured; measuring the total air permeation quantity of the curtain wall opening fan to be measured; and calculating to obtain the air permeation quantity of the curtain wall opening fan to be detected based on the total air permeation quantity and the additional air permeation quantity. The air collecting boxes and the static pressure boxes are respectively arranged on the two sides of the curtain wall opening window, so that the interference of additional air permeation quantity can be reduced in the measuring process, and the accuracy of the measuring result of the air permeation quantity of the curtain wall opening window is improved.
Description
Technical Field
The invention relates to the field of air permeation quantity detection, in particular to a method for detecting air permeation quantity of a curtain wall opening fan.
Background
The three-property detection of the curtain wall refers to the detection of wind pressure resistance, air tightness, water tightness and the like of the curtain wall. According to the air tightness, water tightness and wind pressure resistance performance detection method of the building curtain wall GB/T15227-.
In summary, there is a need for an improved method for detecting air permeation of a curtain wall opening fan.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide a method for detecting air permeation of a curtain wall opening fan, in which an air collection box and a static pressure box are respectively disposed on two sides of a curtain wall opening window, so that interference of additional air permeation can be reduced in a measurement process, and accuracy of a measurement result of the air permeation of the curtain wall opening window can be improved.
In order to achieve the above object, the present invention provides a method for detecting air permeation quantity of a curtain wall opening fan, comprising:
an air collecting box is arranged at the outer side part of the curtain wall opening sash to be tested;
installing a static pressure box at the inner side part of the curtain wall opening sash to be tested;
measuring the additional air permeation quantity of the curtain wall opening fan to be measured;
measuring the total air permeation quantity of the curtain wall opening fan to be measured;
and calculating to obtain the air permeation quantity of the curtain wall opening fan to be detected based on the total air permeation quantity and the additional air permeation quantity.
Preferably, the measuring of the additional air permeation quantity of the curtain wall opening fan to be tested comprises the following steps:
when the opening seam of the curtain wall opening sash to be tested is in a sealed state, supplying air to the static pressure box; the sealing state of the opening seam of the curtain wall opening sash to be tested means that the opening seam of the curtain wall opening sash to be tested is sealed by a sealing element.
Preferably, the measuring of the total air permeation quantity of the curtain wall opening fan to be tested comprises the following steps:
when the opening seam of the curtain wall opening sash to be tested is in a non-sealing state, supplying air to the static pressure box; the non-sealing state of the opening seam of the curtain wall opening sash to be tested means that the opening seam of the curtain wall opening sash to be tested does not have the sealing element for sealing.
Preferably, when the opening seam of the curtain wall opening sash to be tested is in a sealed state, the static pressure box is supplied with air, and the method comprises the following steps:
preparing pressurization;
applying three pressure pulses, wherein the absolute value of the pressure is 500Pa, the loading speed is 100Pa/s, the pressure stabilizing action time is 3s, and the pressure relief time is more than or equal to 1 s;
entering a formal pressurizing stage, and pressurizing according to a pressurizing sequence of 50Pa → 100Pa → 150Pa → 100Pa → 50Pa, wherein the acting time of each stage of pressure is not less than 10 s;
calculating the average value of two additional air permeation quantities under the pressure difference of 100Pa during the pressure increasing and the pressure reducing processes
And positive pressure detection is carried out firstly, and then negative pressure detection is carried out.
Preferably, when the opening seam of the curtain wall opening sash to be tested is in a non-sealing state, the static pressure box is supplied with air, and the method comprises the following steps:
preparing pressurization;
applying three pressure pulses, wherein the absolute value of the pressure is 500Pa, the loading speed is 100Pa/s, the pressure stabilizing action time is 3s, and the pressure relief time is more than or equal to 1 s;
entering a formal pressurizing stage, and pressurizing according to a pressurizing sequence of 50Pa → 100Pa → 150Pa → 100Pa → 50Pa, wherein the acting time of each stage of pressure is not less than 10 s;
calculating the average value of two additional air permeation quantities under the pressure difference of 100Pa during the pressure increasing and the pressure reducing processes
And positive pressure detection is carried out firstly, and then negative pressure detection is carried out.
Preferably, the step of calculating the air permeation quantity of the curtain wall opening fan to be tested by subtracting the additional air permeation quantity from the total air permeation quantity comprises:
processing the total air permeation quantity and the additional air permeation quantity to obtain an additional air permeation quantity in a standard state and a total air permeation quantity in a standard state;
subtracting the additional air permeation quantity in the standard state from the total air permeation quantity in the standard state to obtain the air permeation quantity of the opening fan in the standard state.
Preferably, the total air permeation amount and the additional air permeation amount are treated using the following formulas:
using a formula
Calculating the additional air permeation amount under the standard state; wherein q isf' is the additional air permeation amount in the normal state,
is the total air permeation in the standard state, T is the temperature, g is the gravity constant, and p is the pressure;
using a formula
Calculating the total air permeation amount under the standard state; wherein q iszIs the additional amount of air permeation at the standard state,
is total empty in the standard stateGas permeation, T is temperature, g is the gravitational constant, and p is pressure.
Preferably, the air permeation quantity of the curtain wall opening fan to be tested is obtained by subtracting the additional air permeation quantity from the total air permeation quantity through calculation, and the method further includes:
using a formula
Wherein q iskIs the difference between the total air permeation quantity and the additional air permeation quantity in the standard state, ql' is the air permeation amount per unit slot length, L is the length of the opening slot of the curtain window to be measured, qlIs the air permeation per unit seam length under a pressure difference of 10 Pa.
Preferably, the air collection tank is a modular air collection tank.
Preferably, the combined air collection box includes:
the air inlet side wall of the basic air box body is provided with a first air inlet, the air outlet side wall of the basic air box body is provided with a first air outlet, and the splicing side wall of the basic air box body is provided with a first communication port;
the air inlet side wall of the spliced air box body is provided with a second air inlet, and the spliced side wall is provided with a second communication port;
the exhaust pipe is arranged at the first air outlet of the basic air box body;
the anemoscope is arranged on the exhaust pipe and used for detecting the gas flowing speed in the exhaust pipe;
the spliced air box body is suitable for being spliced and placed on the periphery of the basic air box body, and the second communication port of the spliced air box body is communicated with the first communication port of the basic air box body.
The method for detecting the air permeation quantity of the curtain wall opening fan provided by the invention has at least one of the following beneficial effects:
1. according to the method for detecting the air permeability of the curtain wall opening fan, the air collecting boxes and the static pressure boxes are respectively arranged on the two sides of the curtain wall opening window, so that the interference of the additional air permeability can be reduced in the measuring process, and the accuracy of the measuring result of the air permeability of the curtain wall opening window can be improved.
2. According to the method for detecting the air permeability of the curtain wall opening fan, in the detection process of the air permeability of the curtain wall, the combined air collection box is used for measuring the gas penetrating through the curtain wall opening window to be detected, the size of the combined air collection box can be adjusted based on the size of the curtain wall opening window to be detected, and the method can be suitable for curtain walls of various sizes.
Drawings
The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in connection with the accompanying drawings.
Fig. 1 is an exploded view of an air permeation quantity detection system according to a preferred embodiment of the present invention;
fig. 2 is an exploded view of a modified embodiment of the air permeation quantity detection system according to the preferred embodiment of the present invention;
FIG. 3 is a schematic structural view of an orifice plate of the air permeation quantity detection system according to the preferred embodiment of the present invention;
FIG. 4 is a schematic structural view of an auxiliary frame of the air permeation quantity detection system according to the preferred embodiment of the present invention;
FIG. 5 is a schematic structural view of a spliced air box of the air permeation quantity detection system according to the preferred embodiment of the present invention;
FIG. 6 is a schematic view of the connection of the basic air box and the spliced air box of the air permeation quantity detection system according to the preferred embodiment of the present invention;
fig. 7 is an exploded view of a modified embodiment of the air permeation quantity detection system according to the preferred embodiment of the present invention;
FIG. 8 is a schematic structural view of a modified embodiment of an orifice plate of the air permeation quantity detection system according to the preferred embodiment of the present invention;
fig. 9 is a flow chart of a method for detecting air permeation of a curtain wall opening fan according to a preferred embodiment of the present invention.
The reference numbers illustrate:
the combined air collection box 1, the basic air box body 11, the spliced air box body 12, the exhaust pipe 13, the anemoscope 14, the first sealing element 151, the second sealing element 152, the fixing hole 16, the auxiliary frame 2, the corner piece 21, the first corner piece 211, the second corner piece 212, the third corner piece 213, the fourth corner piece 214, the connecting rod 22, the first connecting rod 221, the second connecting rod 222, the third connecting rod 223, the static pressure box 3, the basic static pressure box body 31, the spliced static pressure box body 32, the air inlet pipe 33, the first orifice plate 4, the vent hole 40, the sealing part 41, the mounting hole 410, the door and window 5 to be detected and the second orifice plate 6.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, only the parts relevant to the invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
Example 1
Referring to the attached drawings 1 to 8 in the specification, the air permeability detection system provided by the invention is illustrated, the air permeability detection system can be suitable for doors and windows to be detected with various sizes, the requirement of air permeability tests of the doors and windows to be detected with various sizes is met, the air permeability detection system is simple in connection mode and convenient to install, and the cost of air permeability measurement can be greatly reduced.
Referring to the attached fig. 1 of the specification, specifically, the air infiltration quantity detecting system comprises a combined air collection box 1, an auxiliary frame 2, a static pressure box 3 and a first orifice plate 4. The auxiliary frame 2 is suitable for being installed on the periphery of a door window 5 to be detected; the static pressure box 3 and the first orifice plate 4 are respectively suitable for being arranged at two opposite sides of the auxiliary frame 2; the combined air collection box 1 is arranged on the outer side of the first pore plate 4; the gas flowing out of the static pressure box 3 sequentially passes through the door and window 5 to be detected and the first pore plate 4 and then enters the combined air collection box 1 and is discharged through the exhaust pipe of the combined air collection box 1.
Further, the combined air collection box 1 comprises a basic air box body 11, a spliced air box body 12, an exhaust duct 13 and an anemometer 14. The air inlet side wall of the basic air box body 11 is provided with a first air inlet, the air outlet side wall is provided with a first air outlet, and the splicing side wall is provided with a first communication port; the air inlet side wall of the spliced air box body 12 is provided with a second air inlet, and the spliced side wall is provided with a second communication port; the exhaust duct 13 is installed at the first air outlet of the basic air box body 11; the anemoscope 14 is mounted on the exhaust duct 13 and is used for detecting the gas flow speed in the exhaust duct 13; the spliced air box body 12 is suitable for being spliced and placed around the basic air box body 11, and the second communication port of the spliced air box body 12 is communicated with the first communication port of the basic air box body 11.
In the using process, the auxiliary frame 2 is firstly sleeved on the periphery of the door and window 5 to be detected, then the auxiliary frame is arranged on the static pressure box 3 on one side of the door and window 5 to be detected, the first pore plate 4 is arranged on the other side of the door and window 5 to be detected, and then the basic air box body 11 and the spliced air box body 12 are spliced and arranged on the outer side of the first pore plate 4.
It should be noted that the outside of the first orifice plate 4 refers to a side of the first orifice plate 4 away from the door or window 5 to be detected.
In the working process, the gas flow process of the air permeation quantity detection system provided by the invention is as follows: firstly, air is blown into the plenum box 3 through a fan, air in the plenum box 3 sequentially passes through the door and window 5 to be detected and the first pore plate 4 and then enters the basic air box body 11 and the spliced air box body 12, air in the spliced air box body 12 enters the basic air box body 11 after passing through the second communication port and the first communication port, and air in the basic air box body 11 is discharged outwards through the exhaust pipe 13.
Based on the exhaust rate of the gas in the exhaust pipe 13 detected by the anemoscope 14, the amount of the air passing through the door and window 5 to be detected can be detected, so that the air permeation amount of the door and window 5 to be detected can be measured and obtained.
It should be further noted that, referring to fig. 1 of the specification, the air inlet side wall of the basic air box 11 refers to a side wall close to the first perforated plate 4, the air outlet side wall of the basic air box 11 refers to a side wall far from the first perforated plate 4, and the spliced side wall of the basic air box 11 refers to one or more of a left side wall, a right side wall, an upper side wall and a lower side wall of the basic air box 11. Correspondingly, the air inlet side wall of the air box 12 refers to a side wall close to the first orifice plate 4, the air outlet side wall of the air box 12 refers to a side wall far away from the first orifice plate 4, and the splicing side wall of the air box 12 refers to one or more of an upper side wall, a lower side wall, a left side wall and a right side wall.
Alternatively, two adjacent side surfaces of the spliced side walls of the basic air box body 11 are respectively provided with the first communication ports, and two adjacent side surfaces of the spliced side walls of the spliced air box body 12 are respectively provided with the second communication ports. Referring to the attached FIG. 2, one of the basic air boxes 11 is spliced with three of the spliced air boxes 12 to form a square combined air collection box 1. Wherein, three of the spliced air boxes 12 are respectively communicated, and the basic air boxes 11 are respectively communicated with two adjacent spliced air boxes 12.
Alternatively, three or four sides of the joined side walls of the basic air box body 11 are respectively provided with the first communication ports, and three or four sides of the joined side walls of the joined air box body 12 are respectively provided with the second communication ports. It will be appreciated that the particular manner of splicing between the basic air box 11 and the spliced air box 12 should not be construed as limiting the invention.
With reference to fig. 6 of the specification, further, the first communication port of the combined air collection box 1 has a first sealing member 151, and the second communication port has a second sealing member 152; when the joint air box 12 and the basic air box 11 are joined and the first communication port corresponds to the second communication port, the first sealing member 151 and the second sealing member 152 are in sealing engagement to seal the joint of the first communication port and the second communication port, thereby preventing gas leakage at the joint of the first communication port and the second communication port.
Preferably, the first sealing member 151 is a connection pipe seat, and the second sealing member 152 is a connection pipe, and the connection pipe seat is adapted to be inserted into the connection pipe, so that the connection pipe seat and the connection pipe are hermetically connected. Preferably, the connection pipe seat and the connection pipe are respectively made of rubber materials. Alternatively, the first seal 151 is a connection pipe, the second seal 152 is a connection pipe seat, and the specific embodiments of the first seal 151 and the second seal 152 should not be construed as limiting the present invention.
Referring to the attached figure 3 of the specification, the first hole plate 4 is provided with a plurality of vent holes, and air passing through the door and window 5 to be detected enters the combined air collection box 1 through the vent holes. The first orifice plate 4 is hermetically connected with the joint of the basic box body 11 and the spliced air box body 12 of the combined air collection box 1.
Further, the preset position of the first orifice plate 4 has a sealing part 41, and the shape of the sealing part 41 is matched with the shape of the basic air box body 11 and/or the spliced air box body 12. When the basic air box 11 and/or the spliced air box 12 is mounted to the first orifice plate 4, the top end of the basic air box 11 and/or the spliced air box 12 is adapted to be mounted to the sealing portion 41 to seal the junction between the basic air box 11 and/or the spliced air box 12 and the first orifice plate 4.
Referring to fig. 8 in the specification, which shows a modified embodiment of the orifice plate provided by the present invention, the sealing portion 41 of the first orifice plate 4 is a sealing groove provided with a rubber gasket. Alternatively, the sealing portion 41 can also be a rubber gasket. It will be appreciated that the specific type of the seal 41 of the first orifice plate 4 should not be construed as limiting the invention.
Referring to fig. 8 of the specification, the sealing portion 41 is formed in a gap between adjacent vent holes 40 of the first orifice plate 4 to stagger the basic air tank 11 and/or the joint air tank 12 from the vent holes 40 of the first orifice plate 4, thereby facilitating the sealing connection between the basic air tank 11 and/or the joint air tank 12 and the first orifice plate 4.
Referring to fig. 5 of the specification, the top walls of the basic air box 11 and the spliced air box 12 are respectively provided with fixing holes 16. The sealing portion 41 has a mounting hole 410. When the top end of the basic air box body 11 and/or the spliced air box body 12 is installed in the seal 41, the fixing hole 16 of the top end of the basic air box body 11 and/or the spliced air box body 12 corresponds to the installation hole 410 of the seal 41, so that the basic air box body 11 and/or the spliced air box body 12 is fixedly installed on the first orifice plate 4 through a screw.
Further, the four sides of the auxiliary frame 2 are telescopic, in other words, the size of the auxiliary frame 2 is adjustable. The operator can be based on wait to detect the size adjustment of door and window 5 the size of attaching frame 2, in order to incite somebody to action attach frame 2 install wait to detect door and window 5 all around.
Illustratively, when the size of the auxiliary frame 2 is larger than the size of the door and window 5 to be detected, an operator can adjust the size of the auxiliary frame 2 to reduce the size of the auxiliary frame 2, and install the reduced auxiliary frame 2 around the door and window 5 to be detected. When the size of the auxiliary frame 2 is smaller than that of the door and window 5 to be detected, an operator can adjust the size of the auxiliary frame 2 to increase the size of the auxiliary frame 2 and install the auxiliary frame 2 with the increased size in the door and window 5 to be detected.
Specifically, the auxiliary frame 2 comprises four corner pieces 21 and four connecting rods 22, the connecting rods 22 and the corner pieces 21 are respectively arranged in a staggered manner, and the end-to-end connection surrounds the periphery of the door and window 5 to be detected; and the distance that the connecting rod 22 extends into the corner piece 21 is adjustable, or the distance that the corner piece 21 extends into the connecting rod 22 is adjustable, so as to adjust the size of the space surrounded by the auxiliary frame 2.
Further, the four corner pieces 21 are a first corner piece 211, a second corner piece 212, a third corner piece 213 and a fourth corner piece 214, respectively; the connection rods 22 include a first connection rod 221, a second connection rod 222, a third connection rod 223, and a fourth connection rod 224.
Both ends of the first connecting rod 221 are movably connected to the first corner piece 211 and the second corner piece 212, respectively; both ends of the second connecting rod 222 are movably connected to the second corner piece 212 and the third corner piece 213, respectively; both ends of the third connecting rod 223 are movably connected to the third corner piece 213 and the fourth corner piece 214, respectively; both ends of the fourth connecting rod 224 are movably connected to the fourth corner piece 214 and the first corner piece 211, respectively.
Referring to the description and the accompanying fig. 7, in a modified embodiment of the air permeability measuring system provided by the present invention, the static pressure box 3 is a combined static pressure box, and the size of the static pressure box 3 can be spliced and combined based on the size of the door and window 5 to be detected, so as to be suitable for the door and window 5 to be detected with various sizes.
A second orifice plate 6 is arranged between the static pressure box 3 and the door and window 5 to be detected; the first pore plate 4 and the second pore plate 6 are respectively positioned at two sides of the door and window 5 to be detected.
Specifically, the combined static pressure box comprises a basic static pressure box body 31, a spliced static pressure box body 32 and an air inlet pipe 33.
The air inlet side wall of the basic static pressure box body 31 is provided with a third air inlet, the air outlet side wall is provided with a second air outlet, and the splicing side wall is provided with a third communication port; the air inlet side wall of the splicing static pressure box body 32 is provided with a fourth air inlet, and the splicing side wall is provided with a fourth communication port; the air inlet pipe 33 is installed at the third air inlet of the basic static pressure box body 31; the air inlet pipe 33 is also suitable for being connected with a fan; the spliced static pressure box body 32 is suitable for being spliced and placed around the basic static pressure box body 31, and the fourth air inlet of the spliced static pressure box body 32 is communicated with the third air inlet of the basic static pressure box body 31. It should be noted that the structure of the combined static pressure box is similar to that of the combined air collection box 1, and the structure of the second perforated plate 6 is similar to that of the first perforated plate 4, and the structure of the combined static pressure box and the second perforated plate 6 is not described in detail herein.
Example 2
Referring to the specification and the accompanying fig. 9, according to another aspect of the present invention, the present invention further provides a method for detecting air permeation quantity of a curtain wall opening fan, including:
101: an air collecting box is arranged at the outer side part of the curtain wall opening fan to be tested;
102: installing a static pressure box at the inner side part of the curtain wall opening sash to be tested;
103: measuring the additional air permeation quantity of the curtain wall opening fan to be measured;
104: measuring the total air permeation quantity of the curtain wall opening fan to be measured;
105: and calculating to obtain the air permeation quantity of the curtain wall opening fan to be detected based on the total air permeation quantity and the additional air permeation quantity.
The method for detecting the curtain wall opening sash provided by the invention can reduce the additional air permeation quantity to the minimum by respectively arranging the air collecting box and the static pressure box on the two sides of the curtain wall opening sash to be detected, so that the accuracy of the detection result of the air permeation quantity of the curtain wall to be detected can be improved.
It should be noted that the air collection box is connected with an exhaust pipe, and an anemograph is installed on the exhaust pipe and used for detecting the amount of gas in the air collection box discharged from the exhaust pipe so as to calculate the air permeation amount of the curtain wall opening fan to be detected. The static pressure box is provided with an air inlet pipe and communicated with a fan, and the fan can blow air into the static pressure box through the air inlet pipe. And the gas exhausted from the static pressure box passes through the curtain wall to be tested, enters the air collecting box and is exhausted through an exhaust pipe of the air collecting box.
Further, in step 103, measuring the additional air permeation quantity of the curtain wall opening fan to be tested includes:
when the opening seam of the curtain wall opening sash to be tested is in a sealed state, supplying air to the static pressure box; the sealing state of the opening seam of the curtain wall opening sash to be tested means that the opening seam of the curtain wall opening sash to be tested is sealed by a sealing element.
Further, in the step 104, measuring the total air permeation quantity of the curtain wall opening fan to be tested includes:
when the opening seam of the curtain wall opening sash to be tested is in a non-sealing state, supplying air to the static pressure box; the non-sealing state of the opening seam of the curtain wall opening sash to be tested means that the opening seam of the curtain wall opening sash to be tested does not have the sealing element for sealing.
Further, when the curtain wall that awaits measuring opens the seam of opening of fan and is in encapsulated situation, to static pressure case air feed includes:
preparing pressurization;
applying three pressure pulses, wherein the absolute value of the pressure is 500Pa, the loading speed is 100Pa/s, the pressure stabilizing action time is 3s, and the pressure relief time is more than or equal to 1 s;
entering a formal pressurizing stage, and pressurizing according to a pressurizing sequence of 50Pa → 100Pa → 150Pa → 100Pa → 50Pa, wherein the acting time of each stage of pressure is not less than 10 s;
calculating the average value of two additional air permeation quantities under the pressure difference of 100Pa during the pressure increasing and the pressure reducing processes
And positive pressure detection is carried out firstly, and then negative pressure detection is carried out.
Further, when the crack of opening of curtain wall opening fan that awaits measuring is in non-sealing state, to the plenum chamber air feed includes:
preparing pressurization;
applying three pressure pulses, wherein the absolute value of the pressure is 500Pa, the loading speed is 100Pa/s, the pressure stabilizing action time is 3s, and the pressure relief time is more than or equal to 1 s;
entering a formal pressurizing stage, and pressurizing according to a pressurizing sequence of 50Pa → 100Pa → 150Pa → 100Pa → 50Pa, wherein the acting time of each stage of pressure is not less than 10 s;
calculating the average value of two additional air permeation quantities under the pressure difference of 100Pa during the pressure increasing and the pressure reducing processes
And positive pressure detection is carried out firstly, and then negative pressure detection is carried out.
Further, in step 105, subtracting the additional air permeation quantity from the total air permeation quantity to calculate an air permeation quantity of the curtain wall opening fan to be tested, including:
processing the total air permeation quantity and the additional air permeation quantity to obtain an additional air permeation quantity in a standard state and a total air permeation quantity in a standard state;
subtracting the additional air permeation quantity in the standard state from the total air permeation quantity in the standard state to obtain the air permeation quantity of the opening fan in the standard state.
Specifically, the total air permeation amount and the additional air permeation amount are treated using the following formulas:
using a formula
Calculating the additional air permeation amount under the standard state; wherein q isf' is the additional air permeation amount in the normal state,
is the total air permeation in the standard state, T is the temperature, g is the gravity constant, and p is the pressure;
using a formula
Calculating the total air permeation amount under the standard state; wherein q iszIs the additional amount of air permeation at the standard state,
is the total air permeation at standard conditions, T is the temperature, g is the gravitational constant, and p is the pressure.
Preferably, T refers to the actual ambient temperature measured and p is the actual pressure of the atmosphere during the measurement.
Further, subtracting the additional air permeation quantity from the total air permeation quantity to calculate the air permeation quantity of the curtain wall opening fan to be tested, and the method further comprises the following steps:
using a formula
Wherein q iskIs the difference between the total air permeation quantity and the additional air permeation quantity in the standard state, ql' is the air permeation amount per unit slot length, L is the length of the opening slot of the curtain window to be measured, qlIs the air permeation per unit seam length under a pressure difference of 10 Pa.
It should be noted that the method for measuring the air permeation quantity of the curtain wall opening fan provided by the invention further comprises the step of measuring the length L of the opening slot of the curtain wall opening window before the air collection box is installed.
It should be noted that the positive and negative voltages are calculated respectively, and the larger value of the positive and negative voltages is finally taken as the detection result, and the grading can be performed according to GB/T31433-2015 general technical conditions for building curtain walls and doors and windows.
Further, in the step 101, the air collection box is the combined air collection box provided in the above preferred embodiment 1.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. The method for detecting the air permeation quantity of the curtain wall opening fan is characterized by comprising the following steps:
an air collecting box is arranged at the outer side part of the curtain wall opening sash to be tested;
installing a static pressure box at the inner side part of the curtain wall opening sash to be tested;
measuring the additional air permeation quantity of the curtain wall opening fan to be measured;
measuring the total air permeation quantity of the curtain wall opening fan to be measured;
and calculating to obtain the air permeation quantity of the curtain wall opening fan to be detected based on the total air permeation quantity and the additional air permeation quantity.
2. The method for detecting the air permeation quantity of the curtain wall opening fan according to claim 1, wherein the step of measuring the additional air permeation quantity of the curtain wall opening fan to be detected comprises the following steps:
when the opening seam of the curtain wall opening sash to be tested is in a sealed state, supplying air to the static pressure box; the sealing state of the opening seam of the curtain wall opening sash to be tested means that the opening seam of the curtain wall opening sash to be tested is sealed by a sealing element.
3. The method for detecting the air permeation quantity of the curtain wall opening fan according to claim 2, wherein the step of measuring the total air permeation quantity of the curtain wall opening fan to be detected comprises the following steps:
when the opening seam of the curtain wall opening sash to be tested is in a non-sealing state, supplying air to the static pressure box; the non-sealing state of the opening seam of the curtain wall opening sash to be tested means that the opening seam of the curtain wall opening sash to be tested does not have the sealing element for sealing.
4. The method for detecting the air permeation quantity of the curtain wall opening fan according to claim 3, wherein when the opening seam of the curtain wall opening fan to be detected is in a sealed state, air is supplied to the static pressure box, and the method comprises the following steps:
preparing pressurization;
applying three pressure pulses, wherein the absolute value of the pressure is 500Pa, the loading speed is 100Pa/s, the pressure stabilizing action time is 3s, and the pressure relief time is more than or equal to 1 s;
entering a formal pressurizing stage, and pressurizing according to a pressurizing sequence of 50Pa → 100Pa → 150Pa → 100Pa → 50Pa, wherein the acting time of each stage of pressure is not less than 10 s;
calculating the average value of two additional air permeation quantities under the pressure difference of 100Pa during the pressure increasing and the pressure reducing processes
And positive pressure detection is carried out firstly, and then negative pressure detection is carried out.
5. The method for detecting the air permeation quantity of the curtain wall opening fan according to claim 4, wherein when the opening seam of the curtain wall opening fan to be detected is in a non-sealing state, air is supplied to the static pressure box, and the method comprises the following steps:
preparing pressurization;
applying three pressure pulses, wherein the absolute value of the pressure is 500Pa, the loading speed is 100Pa/s, the pressure stabilizing action time is 3s, and the pressure relief time is more than or equal to 1 s;
entering a formal pressurizing stage, and pressurizing according to a pressurizing sequence of 50Pa → 100Pa → 150Pa → 100Pa → 50Pa, wherein the acting time of each stage of pressure is not less than 10 s;
calculating the average value of two additional air permeation quantities under the pressure difference of 100Pa during the pressure increasing and the pressure reducing processes
And positive pressure detection is carried out firstly, and then negative pressure detection is carried out.
6. The method for detecting the air permeation quantity of the curtain wall opening fan according to claim 5, wherein the step of calculating the air permeation quantity of the curtain wall opening fan to be detected by subtracting the additional air permeation quantity from the total air permeation quantity comprises the following steps:
processing the total air permeation quantity and the additional air permeation quantity to obtain an additional air permeation quantity in a standard state and a total air permeation quantity in a standard state;
subtracting the additional air permeation quantity in the standard state from the total air permeation quantity in the standard state to obtain the air permeation quantity of the opening fan in the standard state.
7. The method for detecting the air permeation quantity of the curtain wall opening fan according to claim 6, wherein the total air permeation quantity and the additional air permeation quantity are processed by adopting the following formulas:
using a formula
Calculating the additional air permeation amount under the standard state; wherein q isf' is the additional air permeation amount in the normal state,
is the total air permeation in the standard state, T is the temperature, g is the gravity constant, and p is the pressure;
using a formula
Calculating the total air permeation amount under the standard state; wherein q isz' is the additional air permeation amount in the normal state,
is the total air permeation at standard conditions, T is the temperature, g is the gravitational constant, and p is the pressure.
8. The method for detecting the air permeation quantity of the curtain wall opening fan according to claim 6, wherein the air permeation quantity of the curtain wall opening fan to be detected is obtained by subtracting the additional air permeation quantity from the total air permeation quantity, and further comprising:
using a formula
Wherein q iskIs the difference between the total air permeation quantity and the additional air permeation quantity in the standard state, ql' is the air permeation amount per unit slot length, L is the length of the opening slot of the curtain window to be measured, qlIs the air permeation per unit seam length under a pressure difference of 10 Pa.
9. The method for detecting the air infiltration capacity of the curtain wall opening fan according to any one of claims 1 to 8, wherein the air collection tank is a combined air collection tank.
10. The method for detecting the air permeation quantity of the curtain wall opening fan according to claim 9, wherein the combined air collection box comprises:
the air inlet side wall of the basic air box body is provided with a first air inlet, the air outlet side wall of the basic air box body is provided with a first air outlet, and the splicing side wall of the basic air box body is provided with a first communication port;
the air inlet side wall of the spliced air box body is provided with a second air inlet, and the spliced side wall is provided with a second communication port;
the exhaust pipe is arranged at the first air outlet of the basic air box body;
the anemoscope is arranged on the exhaust pipe and used for detecting the gas flowing speed in the exhaust pipe;
the spliced air box body is suitable for being spliced and placed on the periphery of the basic air box body, and the second communication port of the spliced air box body is communicated with the first communication port of the basic air box body.
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Cited By (1)
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