CN111947723B - Measuring tuyere - Google Patents
Measuring tuyere Download PDFInfo
- Publication number
- CN111947723B CN111947723B CN201910412902.9A CN201910412902A CN111947723B CN 111947723 B CN111947723 B CN 111947723B CN 201910412902 A CN201910412902 A CN 201910412902A CN 111947723 B CN111947723 B CN 111947723B
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- air
- pressure
- tuyere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention provides a measuring tuyere, which comprises a tuyere main body, an air quantity flow equalizer and an air quantity measurer, wherein the air quantity flow equalizer is arranged in the tuyere main body and comprises a plurality of grid bars which are arranged in an intersecting manner; the air quantity measurer comprises a sampling device, a pressure transmitter and two pressure guide pipes, wherein the sampling device is arranged in the tuyere main body. In the measuring tuyere provided by the invention, the air quantity flow equalizer is arranged in the tuyere main body, so that the air flowing into the tuyere main body can be homogenized, and a flow field with uniform air speed is provided, so that the air uniformly flows into the air quantity measurer; the air volume measurer has a compact structure, and can obtain an air volume value by measuring air pressure, so that the measuring air port provided by the embodiment not only can measure air volume, but also can provide a flow field with uniform air speed before measurement.
Description
Technical Field
The invention relates to the technical field of air treatment, in particular to a measuring tuyere.
Background
With the rapid development of air treatment technology, how to control and ensure the air quantity balance of indoor air inlet and air outlet in equipment such as a fresh air ventilator, an air purifier, a green building heat pump air conditioner fresh air integrated unit and the like becomes a hot spot of current research. To control the air volume balance, the air volume of the air inlet and the air outlet of the air port needs to be measured.
In order to ensure the accuracy of air volume measurement, a flow field with uniform air speed needs to be provided during measurement, and the current method for obtaining the flow field with uniform air speed usually adopts a section of straight pipe section with enough length to realize the homogenization of the air speed, but the method requires a large internal space of equipment and is difficult to apply to equipment with compact structure. Therefore, there is an urgent need for a measuring tuyere that can be applied to various air treatment devices and can provide a flow field having a uniform wind speed.
Disclosure of Invention
The embodiment of the invention provides a measuring tuyere which is used for providing a flow field with uniform wind speed and can be used for measuring the wind quantity.
In order to achieve the above object, the measuring tuyere provided by the embodiment of the invention comprises a tuyere main body, an air volume flow equalizer and an air volume measuring device, wherein the air volume flow equalizer is arranged in the tuyere main body and comprises a plurality of grid bars which are arranged in an intersecting manner; the air quantity measurer comprises a sampling device, a pressure transmitter and two pressure pipes, wherein the sampling device is arranged in the tuyere main body.
Compared with the prior art, the measuring tuyere provided by the embodiment of the invention has the following advantages:
the measuring tuyere provided by the embodiment of the invention comprises an air quantity flow equalizer and an air quantity measurer, wherein the air quantity flow equalizer is arranged in a tuyere main body and can homogenize air flowing into the tuyere main body, so that a flow field with uniform air speed is provided, and the air uniformly flows into the air quantity measurer; the air quantity measurer comprises a sampling device, a pressure conduit and a pressure transmitter, is compact in structure, and can obtain an air quantity value by measuring air pressure, so that the measuring air inlet provided by the embodiment can measure air quantity, and can also provide a flow field with uniform air speed before measurement, so that a measuring result is more accurate.
As a further improvement of the measuring tuyere of the embodiment of the invention, the air quantity flow equalizer is positioned at the air inlet side of the tuyere main body, and the air quantity measurer is positioned at the air outlet side of the tuyere main body.
As a further improvement of the measuring tuyere according to the embodiment of the present invention, the sampling device includes a first cavity, a second cavity, a first pressure port communicating with the first cavity, and a second pressure port communicating with the second cavity.
As a further improvement of the measuring tuyere, at least one pressure taking port is arranged on the side wall of the first cavity, which is close to the air inlet side; and at least one pressure taking port is arranged on the side wall of the second cavity, which is close to the air outlet side.
As a further improvement of the measuring tuyere according to the embodiment of the present invention, the first pressure port is connected to one end of one of the pressure conduits, the second pressure port is connected to one end of the other pressure conduit, and the other ends of the two pressure conduits are respectively connected to the pressure transmitter.
As a further improvement of the measuring tuyere of the embodiment of the present invention, the plurality of grid bars includes a plurality of transverse grid bars and a plurality of longitudinal grid bars, and the transverse grid bars perpendicularly intersect with and connect with the longitudinal grid bars.
As a further improvement of the measuring air port, the grid bars are arc-shaped grid bars, and the air quantity flow equalizer protrudes towards the air inlet side and forms an arc surface.
As a further improvement of the measuring tuyere of the embodiment of the invention, the air quantity flow equalizer further comprises grid strip fixing plates which are respectively connected with a plurality of grid strips and the tuyere main body.
As a further improvement of the measuring tuyere of the embodiment of the present invention, a plurality of the grating strips are integrally injection molded.
As a further improvement of the measuring tuyere of the embodiment of the present invention, the measuring tuyere further comprises a display device connected to the pressure transmitter.
In addition to the technical problems, technical features constituting the technical solutions, and beneficial effects caused by the technical features of the technical solutions described above, other technical problems that can be solved by the measurement tuyere provided by the embodiment of the present invention, other technical features included in the technical solutions, and beneficial effects caused by the technical features of the technical solutions, further detailed description will be made in the detailed description of the embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is apparent that the drawings in the following description are only a part of embodiments of the present invention, these drawings and the written description are not intended to limit the scope of the disclosed concept in any way, but rather to illustrate the disclosed concept to those skilled in the art by referring to the specific embodiments, and other drawings may be obtained from these drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic view of a measuring tuyere according to an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of the port body, air flow equalizer and sampling device of FIG. 1;
FIG. 3 is a schematic diagram of the flow equalizer of FIG. 1;
fig. 4 is a left side view of the flow equalizer of fig. 3.
Reference numerals illustrate:
100-tuyere body;
200-air quantity flow equalizer;
210-transverse grid bars;
220-longitudinal grid strips;
230-grid bar fixing plates;
310-sampling device;
311-a first cavity;
312-a second cavity;
313-a first pressure port;
314-a second pressure port;
320-a pressure taking port;
330-a pressure transmitter;
340-a pressure conduit;
a is an air inlet side;
and B, the air outlet side.
Detailed Description
In order to solve the problem that an air outlet in the prior art cannot provide a flow field with uniform air speed and perform air volume measurement, the embodiment of the invention provides a measuring air outlet, which comprises an air volume flow equalizer and an air volume measuring device, wherein the air volume flow equalizer is arranged in an air outlet main body and can homogenize air flowing into the air outlet main body, so that the air outlet main body is provided with the flow field with uniform air speed, and the air uniformly flows into the air volume measuring device; the air quantity measurer comprises a sampling device, a pressure conduit and a pressure transmitter, is compact in structure, and can obtain an air quantity value by measuring air pressure, so that the measuring air inlet provided by the embodiment can measure the air quantity and can also provide a flow field with uniform air speed before measurement.
In order to make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, 2 and 3, a measuring tuyere provided by an embodiment of the present invention includes a tuyere main body 100, an air volume equalizer 200 and an air volume measuring device, wherein the air volume equalizer 200 is installed in the tuyere main body 100, and the air volume equalizer 200 includes a plurality of grid bars which are arranged in an intersecting manner; the air volume measurer includes a sampling device 310, a pressure transmitter 330 and two pressure conduits 340, and the sampling device 310 is installed in the tuyere body 100.
Specifically, the measuring tuyere includes a tuyere body 100, the tuyere body 100 may be provided as a pipe-type tuyere body 100, and specifically the pipe-type tuyere body 100 may have a circular or rectangular cross-sectional shape, and the tuyere body 100 may be a plastic body or a metal body. The tuyere body 100 may be provided as an integrally formed structure, or may be provided as a multi-stage type spliced structure.
Preferably, as shown in fig. 1, the tuyere body 100 is configured as a two-stage duct body, where the air volume flow equalizer 200 is installed in one stage of the duct body of the tuyere body 100, and the air volume flow equalizer 200 is used for homogenizing the air flow, in this embodiment, the air volume flow equalizer 200 may be installed on an air inlet side of the tuyere body 100, and may also be installed on an air outlet side of the tuyere body 100, and it should be noted that, in this embodiment, the measurement tuyere provided by this embodiment may be installed on an air treatment device, and the air inlet side of the air treatment device is the air inlet side of the tuyere body 100, and correspondingly, the air outlet side of the air treatment device is the air outlet side of the tuyere body 100. As shown in fig. 1, the following embodiments are described with the direction indicated by a being the air intake side and the direction indicated by B being the air outlet side.
In this embodiment, the air volume flow equalizer 200 is installed at a position of the air inlet main body 100 near the air inlet side a, where the air volume flow equalizer 200 includes a plurality of grid bars, and the plurality of grid bars are arranged in an intersecting manner, specifically, the plurality of grid bars arranged in an intersecting manner may be arranged as grid bars arranged transversely and grid bars arranged longitudinally, or may be arranged as a plurality of grid bars staggered in an oblique manner. In this embodiment, the grid bars may be plastic grid bars, metal grid bars, and a plurality of grid bars are connected with each other, and the connection manner may be through bolting, or through adhesive connection, or may be an integrally formed structure. When the air flows in from the air inlet side a, the air flowing into the tuyere main body 100 can flow out while forming relatively uniform air through the plurality of intersecting grid bars.
The air volume measurer comprises a sampling device 310, a pressure transmitter 330 and two pressure conduits 340, specifically, as shown in fig. 1, the sampling device 310, the pressure conduits 340 and the pressure transmitter 330 are sequentially communicated, when the air inlet side a has air flowing into the air inlet main body 100, the air flows into the sampling device 310 after being homogenized by the air flow equalizer, and the sampling device 310 is used for sampling and collecting the wind pressure of the flowing air. The number of the pressure conduits 340 is set to two, the two pressure conduits 340 are respectively used for being communicated with the sampling device 310, in this embodiment, the sampling device 310 can collect the total pressure and the static pressure of the flowing wind, the total pressure and the static pressure are respectively output to the pressure transmitter 330 through the two pressure conduits 340, the pressure transmitter 330 calculates the pressure difference between the input total pressure and the static pressure to obtain the air quantity, specifically, when calculating, the pressure transmitter 330 takes the difference between the measured total pressure and the static pressure, the difference is the dynamic pressure, the wind speed corresponding to the dynamic pressure can be obtained through the calculation of the Bernoulli equation, and the product of the wind speed and the air inlet area is the air quantity.
On the basis of the above embodiment, the sampling device 310 is installed in the tuyere body 100, the sampling device 310 may be configured as a sampling tube, and the sampling tube is connected with the tuyere body 100 by bolting, welding or clamping; the sampling device 310 may also be provided as a sampling cavity formed within the tuyere body 100. In this embodiment, the sampling device 310 is used to collect the total and static pressures of the wind flowing into the tuyere body 100 and input the total and static pressures into the pressure transmitter 330 through the pressure conduit 340 connected thereto.
In summary, the measuring tuyere provided in this embodiment includes the air volume equalizer 200 and the air volume measurer, where the air volume equalizer 200 is installed in the tuyere main body 100, and can homogenize the air flowing into the tuyere main body 100, thereby providing a flow field with uniform wind speed, so that the air uniformly flows into the air volume measurer; the air volume measurer comprises a sampling device 310, a pressure conduit 340 and a pressure transmitter 330, and is compact in structure, and can obtain an air volume value by measuring air pressure, so that the measuring air port provided by the embodiment can measure air volume, and can also provide a flow field with uniform air speed before measurement, so that a measuring result is more accurate.
Further, in one possible implementation, the air flow equalizer 200 is located on the air inlet side a of the tuyere body 100, and the air flow measurer is located on the air outlet side B of the tuyere body 100. As shown in fig. 1, the air flow equalizer 200 and the air volume measuring device are respectively located at two sides of the air inlet main body 100, and in this embodiment, the air flow equalizer 200 is disposed at the air inlet side a, so that the air flowing into the air inlet main body 100 is processed by the air flow equalizer 200 to form a uniform flow field, and then enters the air volume measuring device for measurement. In addition, the air volume equalizer 200 and the air volume measuring device may be disposed at the air intake side a at the same time, and may be disposed at the air outlet side B at the same time.
The air volume measurer comprises a sampling device 310 installed in the tuyere body 100, further in one possible implementation, the sampling device 310 comprises a first cavity 311, a second cavity 312, a first pressure interface 313 in communication with the first cavity 311, and a second pressure interface 314 in communication with the second cavity 312. In this embodiment, the sampling device 310 is used for collecting wind pressure, as shown in fig. 2, the sampling device 310 is disposed on the air outlet side B of the tuyere body 100, the sampling device 310 specifically includes a first cavity 311 and a second cavity 312 formed on the air outlet side B of the tuyere body 100, and the positions of the first cavity 311 and the second cavity 312 are not specifically limited in this embodiment, and the following embodiments will be described by taking the case that the first cavity 311 is close to the air inlet side a.
In a possible implementation manner, at least one pressure taking port 320 is arranged on the side wall of the first cavity 311 close to the air inlet side A; the side wall of the second cavity 312 near the air outlet side B is provided with at least one pressure taking port 320. On the basis of the above embodiment, the first cavity 311 is communicated with the first pressure interface 313, the first cavity 311 is used for collecting the full pressure of the wind flowing into the tuyere body 100, as shown in fig. 2, in this embodiment, one or more pressure taking ports 320 are arranged on the side wall of the first cavity 311 near the air inlet side a, and the pressure taking ports 320 are used for allowing the wind to flow into the first cavity 311, so as to collect the full pressure of the wind flow; one or more pressure taking ports 320 are arranged on the side wall of the second cavity 312 close to the air outlet side B and used for collecting static pressure of air flow, and the first cavity 311 is not communicated with the second cavity 312.
The first pressure interface 313 is communicated with the first cavity 311, and the full pressure collected in the first cavity 311 can be transmitted out through the first pressure interface 313; the second pressure port 314 communicates with the second cavity 312, and static pressure collected in the second cavity 312 can be transmitted through the second pressure port 314. In this embodiment, the first pressure port 313 and the first cavity 311 may be connected by a screw, or may be an integrally formed structure; the second pressure port 314 and the second cavity 312 may be in threaded connection or may be in an integrally formed structure.
Further, the first pressure port 313 is connected to one end of one pressure conduit 340, the second pressure port 314 is connected to one end of the other pressure conduit 340, and the other ends of the two pressure conduits 340 are connected to the pressure transmitter 330, respectively. The measuring tuyere provided in this embodiment includes two pressure conduits 340, wherein two ends of one pressure conduit 340 are respectively connected with the first pressure interface 313 and the pressure transmitter 330, for transmitting the total pressure collected by the first cavity 311 into the pressure transmitter 330, two ends of the other pressure conduit 340 are respectively connected with the second pressure interface 314 and the pressure transmitter 330, for transmitting the static pressure collected by the second cavity 312 into the pressure transmitter 330, and the pressure transmitter 330 is used for processing and calculating the air quantity obtained by the static pressure and the total pressure. In this embodiment, the pressure conduit 340 may be a soft rubber conduit or a plastic conduit, and the two ends of the pressure conduit 340 may be further provided with sealing rings to enhance the sealing effect, so as to further improve the accuracy of wind pressure transmission.
Based on the above embodiment, the air flow equalizer 200 includes a plurality of grid bars, and in one possible implementation, the plurality of grid bars includes a plurality of transverse grid bars 210 and a plurality of longitudinal grid bars 220, and the transverse grid bars 210 perpendicularly intersect and connect with the longitudinal grid bars 220. As shown in fig. 3 and fig. 4, in this embodiment, the plurality of grid bars may be a plurality of vertical intersecting transverse grid bars 210 and vertical grid bars 220, where the transverse grid bars 210 and the vertical grid bars 220 are connected to each other, a gap is provided between every two adjacent transverse grid bars 210, a gap is provided between every two adjacent vertical grid bars 220, the plurality of transverse grid bars 210 may be arranged at equal intervals, or may be arranged at unequal intervals, and the plurality of vertical grid bars 220 may be arranged at equal intervals, or may be arranged at unequal intervals.
In one possible implementation, the grille bars are arc-shaped grille bars, and the air volume flow equalizer 200 is convex toward the air intake side a and forms an arc surface. Based on the foregoing embodiment, in this embodiment, the grid bars are set to be arc-shaped grid bars, and then the shapes of the transverse grid bars 210 and the longitudinal grid bars 220 are arc-shaped, and the plurality of arc-shaped transverse grid bars 210 and the longitudinal grid bars 220 are intersected and connected, so that the air volume flow equalizer 200 is wholly arc-shaped, as shown in fig. 3, the air volume flow equalizer 200 protrudes towards the air inlet side a to form an arc surface, and the contact area between the air flow and the air volume flow equalizer 200 is increased by such arrangement, and the homogenization effect on the air flow is further improved.
The air flow equalizer 200 is installed in the tuyere body 100, the ends of the plurality of transverse grid bars 210 and the longitudinal grid bars 220 may be directly connected to the inner wall of the tuyere body 100, the connection manner may be clamping connection, welding connection or bonding connection, preferably, in a possible implementation manner, the air flow equalizer 200 further includes grid bar fixing plates 230, the grid bar fixing plates 230 are respectively connected to the plurality of grid bars and the tuyere body 100, that is, the plurality of transverse grid bars 210 and the longitudinal grid bars 220 may be connected to the inner wall of the tuyere body 100 through the grid bar fixing plates 230, in this embodiment, the grid bar fixing plates 230 are provided as annular fixing plates, the grid bar fixing plates 230 are provided at one ends of the plurality of transverse grid bars 210 and the longitudinal grid bars 220 facing away from the air inlet side a, the ends of the plurality of transverse grid bars 210 and the longitudinal grid bars 220 are respectively connected to the grid bar fixing plates 230, the connection manner may be clamping connection, welding connection or bonding connection may be provided as an integral molding with the grid bar fixing plates 230, and the connection may also be provided by bolts connection between the grid bar fixing plates 230 and the tuyere body 100.
In one possible implementation, the plurality of grid bars are integrally injection molded. The plurality of grid bars comprise a plurality of transverse grid bars 210 and longitudinal grid bars 220, the plurality of transverse grid bars 210 and longitudinal grid bars 220 are manufactured through integral injection molding, and the arrangement mode can improve the overall reliability of the air flow equalizer 200, so that the flow equalizing effect of the air flow equalizer 200 is ensured.
In one possible implementation, the measurement port further includes a display device coupled to the pressure transmitter 330. In this embodiment, the display device is in signal connection with the pressure transmitter 330, and the display device is used for displaying the air volume value obtained by calculation of the pressure transmitter 330. Furthermore, the display device may also be used to display measured wind speed and other parameters.
In this specification, each embodiment or implementation is described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. The utility model provides a measure wind gap, its characterized in that includes wind gap main part, amount of wind flow equalizer and air volume measurement ware, wherein, the amount of wind flow equalizer is installed in the wind gap main part, the wind gap main part is pipeline type wind gap main part, the amount of wind flow equalizer includes a plurality of grid bars that intersect and set up, the amount of wind flow equalizer is used for making the air current homogenization; the air quantity measurer comprises a sampling device, a pressure transmitter and two pressure guide pipes, and the sampling device is arranged in the air port main body; the grid bars are arc-shaped grid bars, and the air quantity flow equalizer protrudes towards the air inlet side and forms an arc surface;
the air quantity flow equalizer is positioned on the air inlet side of the air port main body, and the air quantity measurer is positioned on the air outlet side of the air port main body;
the sampling device comprises a first cavity, a second cavity, a first pressure interface communicated with the first cavity and a second pressure interface communicated with the second cavity;
at least one pressure taking port is arranged on the side wall of the first cavity, which is close to the air inlet side; and at least one pressure taking port is arranged on the side wall of the second cavity, which is close to the air outlet side.
2. The measuring tuyere of claim 1, wherein the first pressure port is connected to one end of one of the pressure conduits, the second pressure port is connected to one end of the other pressure conduit, and the other ends of the two pressure conduits are connected to the pressure transmitters, respectively.
3. The metering tuyere of claim 1, wherein the plurality of grid strips includes a plurality of transverse grid strips and a plurality of longitudinal grid strips, the transverse grid strips perpendicularly intersecting and connecting with the longitudinal grid strips.
4. The metering tuyere of claim 1, further comprising a grill strip fixing plate connected to a plurality of the grill strips and the tuyere body, respectively.
5. The metering tuyere of claim 4, wherein a plurality of the grating strips are integrally injection molded.
6. The metering tuyere of claim 1, further comprising a display device coupled to the pressure transmitter.
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| CN201910412902.9A CN111947723B (en) | 2019-05-17 | 2019-05-17 | Measuring tuyere |
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| CN201910412902.9A CN111947723B (en) | 2019-05-17 | 2019-05-17 | Measuring tuyere |
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| CN111947723B true CN111947723B (en) | 2023-05-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201387344Y (en) * | 2009-03-16 | 2010-01-20 | 杭州浙大协和环保技术有限公司 | Air volume measuring device |
| CN102853867A (en) * | 2012-09-18 | 2013-01-02 | 黑龙江省电力科学研究院 | Flow-equalizing self-stabilization air quantity measuring device |
| CN104326580B (en) * | 2014-10-24 | 2016-04-06 | 中国人民大学 | A kind of sewage disposal micro-hole aerator |
| EP3064904B1 (en) * | 2015-03-06 | 2023-06-07 | Sanyo Denki Co., Ltd. | Measurement device |
| CN206362028U (en) * | 2016-12-29 | 2017-07-28 | 青岛海尔新能源电器有限公司 | The liquid-dividing head and water heater of a kind of heat pump |
| CN206801967U (en) * | 2017-05-05 | 2017-12-26 | 珠海格力电器股份有限公司 | Grid structure and fan with same |
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