CN117517703A - Gas flow information measuring device and gas flow information measuring method - Google Patents
Gas flow information measuring device and gas flow information measuring method Download PDFInfo
- Publication number
- CN117517703A CN117517703A CN202311315154.5A CN202311315154A CN117517703A CN 117517703 A CN117517703 A CN 117517703A CN 202311315154 A CN202311315154 A CN 202311315154A CN 117517703 A CN117517703 A CN 117517703A
- Authority
- CN
- China
- Prior art keywords
- wind speed
- gas flow
- flow information
- sensor
- measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 46
- 238000009423 ventilation Methods 0.000 claims abstract description 25
- 238000005070 sampling Methods 0.000 claims description 28
- 239000000523 sample Substances 0.000 claims description 19
- 230000008859 change Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 238000004458 analytical method Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 58
- 230000006870 function Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
- G01P5/12—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
-
- 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
- G01F1/68—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 thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
- G01F1/688—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element
- G01F1/69—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element of resistive type
-
- 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
-
- 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
- G01F15/18—Supports or connecting means for meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The application discloses a measuring device and a measuring method of gas flow information. Wherein the measuring device comprises: a plurality of sensing units, a connecting rod and a support. The sensor groups are connected with the processor through the bracket, and the sensor groups are connected with the processor to form an independent sensing unit for sensing the wind speed. The plurality of sensing units are connected through the connecting holes on the connecting rod, so that the free combination of the plurality of sensing units is realized, the surface wind speed of the measuring equipment can be directly measured in the scenes such as an air supply outlet, a clean workshop, a ventilation cabinet workbench and the like, the surface wind speed measurement requirements in different measurement scenes are met, and the flexibility and the application range of the measuring equipment are greatly improved. Meanwhile, the multiple sensor groups on the sensing unit can realize synchronous measurement of the multipoint sensors, data acquisition quantity is improved, and analysis accuracy of gas flow information is improved.
Description
Technical Field
The present disclosure relates to the field of gas measurement technologies, and in particular, to a device and a method for measuring gas flow information.
Background
The clean room generally relies on unidirectional clean air flow to push and replace indoor polluted air to maintain cleanliness, and the air speed and uniformity of the air flow of the air supply section and the indoor whole horizontal plane are important parameters affecting the cleanliness; reasonable and uniform section wind speed can remove pollutants generated in the indoor process more quickly and effectively. The ventilation cabinet for the laboratory maintains the surface air speed and uniformity of the air supply with reasonable cross section, and can effectively control and prevent the diffusion of pollutants in the laboratory from the source.
At present, different measuring equipment is needed for measuring the air speed, uniformity and other data of an air supply section, an indoor whole horizontal plane air flow one by one in different measuring scenes such as a clean room air return opening, a corridor area, a ventilation cabinet and the like, and the measuring cost is high. In addition, because of the problems of limited appearance of the measuring equipment and more measuring methods, if the indirect wind speed value is obtained through conversion by a differential pressure method, the measuring error is larger.
Disclosure of Invention
In view of this, the present application provides a measurement device for gas flow information and a measurement method for gas flow information, which implement synchronous measurement of multiple sensors in a matrix type free combination and accurate measurement of wind speed values of different scenes by designing each sensing unit group in series communication.
According to an aspect of the present application, there is provided a measurement apparatus for gas flow information, comprising:
a plurality of sensing units, the sensing units comprising:
the bracket is constructed into a strip-shaped structure, and a plurality of vent holes are formed in the bracket;
a plurality of sensor groups which are arranged on the bracket through a fixing plate,
the plurality of sensor groups are connected in series, the vent holes are positioned between two adjacent sensor groups, and each sensor group comprises a temperature sensor and a thermosensitive wind speed sensor;
the processor is electrically connected with the plurality of sensor groups, is arranged at one end of the bracket and is used for determining gas flow information of a space where the measuring equipment is located according to a wind speed value acquired by the thermosensitive wind speed sensor, wherein the gas flow information comprises at least one of surface wind speed, surface wind speed uniformity score, wind quantity and ventilation times;
the connecting rod is provided with a connecting hole, the connecting hole is detachably connected with the sensing units, and the connecting rod is used for combining a plurality of sensing units;
and the supporting piece is connected with the connecting rod.
Optionally, the measuring device comprises: the lifting device is connected with the supporting piece and is used for driving the sensing unit arranged on the supporting piece to move along the height direction of the measuring equipment.
Optionally, the measuring device comprises: the rotating device is connected with the supporting piece and is used for driving the sensing unit arranged on the supporting piece to rotate.
Optionally, the opening angle of the ventilation opening of the thermosensitive wind speed sensor is between-45 degrees and 45 degrees, the sensitivity of the thermosensitive wind speed sensor is in the range of 0.01m/s to 0.5m/s, and the wind speed precision of the thermosensitive wind speed sensor is in the range of +/-0.1 m/s to +/-0.3 m/s.
Optionally, the probe of the heat-sensitive wind speed sensor is constructed in a spherical packaging structure, and is made of stainless steel materials and high polymer materials.
Optionally, the diameters of the probe of the thermosensitive wind speed sensor and the probe of the temperature sensor are smaller than 7mm.
Optionally, the sensing units are arranged in parallel, and the distance between two adjacent sensing units is 5 cm-50 cm;
the distance between two adjacent sensor groups on the same sensing unit is the same as the distance between two adjacent sensing units.
Optionally, the processor includes:
a housing;
the circuit board, the circuit board set up in the casing, the circuit board includes:
the temperature compensation circuit is used for correcting the wind speed value acquired by the heat-sensitive sensor according to the temperature value output by the temperature sensor;
the data processing circuit is used for determining the gas flow information according to the corrected wind speed value;
the connecting piece is connected with the shell and the bracket;
and the transmission line is used for connecting processors of other sensing units in series.
According to another embodiment of the present application, there is provided a method for measuring gas flow information, including:
acquiring wind speed values acquired by a plurality of thermosensitive wind speed sensors at different sampling moments in real time;
and determining gas flow information of the space where the measuring equipment is located according to the wind speed value, wherein the gas flow information comprises at least one of surface wind speed, surface wind speed uniformity score, air quantity and ventilation times.
Optionally, the gas flow information includes a face wind speed, and the determining the gas flow information of the space where the measurement device is located according to the wind speed value includes:
determining the instantaneous plane wind speed at any sampling moment according to the wind speed values acquired by the plurality of thermosensitive wind speed sensors at any sampling moment in real time;
and determining the average surface wind speed of the target period according to the instantaneous surface wind speed at the sampling time in the target period.
Optionally, the gas flow information includes a surface wind speed uniformity score, and the determining the gas flow information of the space where the measurement device is located according to the wind speed value includes:
generating a wind speed change curve at any sampling moment according to the maximum value in target wind speed values at any sampling moment, wherein the target wind speed values are wind speed values acquired by the thermosensitive wind speed sensors positioned on a target reference line in a plurality of sensing units;
and determining the surface wind speed uniformity score according to the curvature of the wind speed change curve, wherein the larger the curvature of the wind speed change curve is, the lower the surface wind speed uniformity score is.
Optionally, the gas flow information includes air volume and ventilation times, and the determining the gas flow information of the space where the measurement device is located according to the wind speed value includes:
acquiring the cross-sectional area of a tuyere of a space where the measuring equipment is located, the number of middle tuyeres of the space where the measuring equipment is located and the volume of the space where the measuring equipment is located;
determining the air quantity of the air port according to the average surface air speed and the cross sectional area of the air port;
determining the total air supply amount of the space where the measuring equipment is located according to the air quantity of the air outlets and the quantity of the air outlets;
and determining the ventilation times according to the total air supply amount and the volume.
Optionally, before determining the gas flow information of the space where the measurement device is located according to the wind speed value, the method further includes:
acquiring a temperature value acquired by the temperature sensor;
determining a temperature compensation function according to the temperature value;
and correcting the wind speed value acquired by the heat-sensitive sensor according to the temperature compensation function.
By means of the above technical solution, the measuring device comprises: a plurality of sensing units, a connecting rod and a support. The sensor groups are connected with the processor through the bracket, and the sensor groups are connected with the processor to form an independent sensing unit for sensing the wind speed. The plurality of sensing units are connected through the connecting holes on the connecting rod, so that the free combination of the plurality of sensing units is realized, the surface wind speed of the measuring equipment can be directly measured in the scenes such as an air supply outlet, a clean workshop, a ventilation cabinet workbench and the like, the surface wind speed measurement requirements in different measurement scenes are met, and the flexibility and the application range of the measuring equipment are greatly improved. Meanwhile, the multiple sensor groups can realize synchronous measurement of the multipoint sensors, data acquisition quantity is improved, and analysis accuracy of gas flow information is improved. The measuring equipment is further provided with a supporting piece, so that the measuring equipment is not easy to be driven by flowing gas, and the stability of the equipment is enhanced. Further, the support is constructed to rectangular shape structure, reduces the space occupation of support when guaranteeing support intensity, helps reducing air current windage, reduces the influence of perception unit to the gas flow, and then improves data acquisition accuracy. The plurality of sensor groups are arranged on the bracket through the fixing plate, so that flexible position adjustment of the sensor groups is realized. The plurality of sensor groups are connected in series, and each sensor group comprises a temperature sensor and a thermosensitive wind speed sensor, so that a plurality of sensor groups in the plurality of sensing units are arranged in a matrix manner, and the wind speed in the inner face of the space can be measured. And set up a plurality of air vents on the support, the air vent is located between two adjacent sensor groups, and gaseous accessible air vent passes the support, further reduces the air current windage, when guaranteeing the authenticity of measurement for measuring equipment is difficult to be driven by the gas that flows, has strengthened the steadiness. The processor is electrically connected with the plurality of sensor groups, and the processor is arranged at one end of the bracket so that the processors of the plurality of sensing units are connected in series to realize synchronous measurement of the plurality of sensors. The processor can be used for determining the gas flow information of the space where the measuring equipment is located according to the wind speed value acquired by the thermosensitive wind speed sensor.
The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 shows one of schematic structural diagrams of a measuring apparatus for gas flow information provided in an embodiment of the present application;
FIG. 2 shows a second schematic diagram of a gas flow information measurement apparatus according to an embodiment of the present application;
fig. 3 shows a front view of a sensing unit provided in an embodiment of the present application;
fig. 4 shows a perspective view of a sensing unit provided by an embodiment of the present application;
fig. 5 shows a schematic structural diagram of a sensor group and a fixing plate according to an embodiment of the present application;
FIG. 6 shows a schematic layout of a thermally sensitive wind speed sensor in a measurement device for gas flow information provided by an embodiment of the present application;
fig. 7 is a flow chart of a method for measuring gas flow information according to an embodiment of the present disclosure;
FIG. 8 shows a schematic diagram of a wind speed variation curve provided by an embodiment of the present application.
Reference numerals:
the device comprises a sensing unit 10, a connecting rod 20, a supporting piece 30, a lifting device 40, a sensing unit 11, a bracket 111, a temperature sensor 112, a heat-sensitive wind speed sensor 113, a fixing plate 114, a processor 115, a vent hole 116, a housing 1151, a circuit board 1152, a connecting piece 1153 and a transmission line 1154.
Detailed Description
The present application will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of illustrating the present application and are not to be construed as limiting the present application.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly fused. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.
In the present embodiment, there is provided a measurement apparatus of gas flow information, as shown in fig. 1 to 3, comprising: a plurality of sensing units 10, a connection rod 20, and a support 30.
Wherein the sensing unit 10 includes: a support 111, a plurality of sensor groups (a temperature sensor 112 and a thermosensitive wind speed sensor 113), and a processor 115. The connecting rod 20 is provided with a connecting hole (not shown in the figure), the connecting hole is detachably connected with the sensing units 10, and the connecting rod 20 is used for combining a plurality of sensing units 10. The support 30 is connected with the connection rod 20.
In this embodiment, a plurality of sensor groups are connected through a bracket, and the sensor groups are connected to a processor to form an independent sensing unit for sensing wind speed. The plurality of sensing units are connected through the connecting holes on the connecting rods, so that the free combination of the plurality of sensing units is realized, the measuring equipment can simultaneously carry out the wind speeds of a plurality of measuring points in the scenes of the air supply outlet, the clean workshop, the ventilation cabinet workbench and the like, the surface wind speed measuring requirements under different measuring scenes are met, and the flexibility and the application range of the measuring equipment are greatly improved. Meanwhile, the multiple sensor groups can realize synchronous measurement of the multipoint sensors, data acquisition quantity is improved, and analysis accuracy of gas flow information is improved. In addition, the measuring equipment is further provided with a supporting piece, so that the measuring equipment is not easy to be driven by flowing gas, and the stability of the equipment is enhanced.
For example, as shown in fig. 1, six sensing units 10 are arranged in parallel along the height direction of the measuring apparatus by a connection rod 20 to accommodate wind speed measurement of a horizontal section of a laboratory fume hood or a clean room space. As shown in fig. 2, six sensing units 10 are arranged in parallel in a horizontal direction by a connecting rod 20 to adapt to the measurement of the wind speed of the air conditioner air outlet vertical to the ground air outlet.
It will be appreciated that the structure of the connecting rod may be the same as the support member, as shown in fig. 1 and 2, with the support effect of the plurality of sensing units being achieved by means of cross-connection.
Specifically, as shown in fig. 3, the support 111 is configured as a long strip structure, which reduces the space occupation of the support 111 while ensuring the support strength, thereby helping to reduce the airflow wind resistance, reduce the influence of the sensing unit 10 on the airflow, and further improve the data acquisition accuracy. A plurality of sensor groups are provided on the support 111, and the plurality of sensor groups are connected in series so as to realize a matrix arrangement of the plurality of sensor groups in the plurality of sensing units 10, which is helpful for measuring the wind speed in the inner space. And a plurality of vent holes 116 are formed in the support 111, the vent holes 116 are located between two adjacent sensor groups, gas can pass through the support 111 through the vent holes 116, so that the air flow wind resistance is further reduced, the authenticity of measurement is ensured, and meanwhile, the measuring equipment is not easy to be driven by flowing gas, and the stability is enhanced.
Further, the processor 115 is electrically connected to the plurality of sensor groups, and the processor 115 is disposed at one end of the support 111, so that the processors 115 of the plurality of sensing units 10 are connected in series, and synchronous measurement by the plurality of sensors is achieved. The processor 115 can determine the gas flow information of the space where the measuring device is located according to the wind speed value acquired by the thermosensitive wind speed sensor 113.
The gas flow information comprises at least one of surface wind speed, surface wind speed uniformity score, air quantity and ventilation times.
In one embodiment, as shown in fig. 3 and 5, a plurality of sensor groups are mounted on the fixed plate 114 to form independent sensor mounting assemblies, and the number of the sensor mounting assemblies can be freely increased or decreased according to the measurement requirement, so that the assembly of the sensors is facilitated. The fixing plate 114 is connected to the bracket 111 so that a plurality of sensor groups can be flexibly disposed on the bracket 111.
It is worth mentioning that the support length direction is upwards parallel to be equipped with a plurality of regulation mouths, and fixed plate back is equipped with the pothook, and the pothook can block in the regulation mouths to realize the connection of fixed plate and support, make the installation of sensor group fixed more convenient fast moreover, help realizing the nimble position adjustment of sensor group. In order to further enhance the connection strength between the fixing plate and the fixing plate, at least two rows of first fixing holes are arranged in parallel in the length direction of the support, the adjusting opening is positioned between the two corresponding first fixing holes, at least two second fixing holes are arranged on the fixing plate, the two second fixing holes are positioned on two sides of the clamping hook, and the two second fixing holes on the fixing plate correspond to the two first fixing holes on the support one by one and then can be connected and fixed through the first bolts.
It should be noted that, as shown in fig. 1 and 2, a plurality of sensing units are disposed in parallel. The distance between two adjacent sensing units is 5 cm-50 cm, for example, 10cm, 20cm, 35cm. The distance between two adjacent sensor groups on the same sensing unit is the same as the distance between two adjacent sensing units, so that 4 sensor groups adjacent to each other form a square, as shown in fig. 6, each measuring point corresponds to one sensor group, and a plurality of sensor groups form a uniform square matrix. The position distribution of the uniform sensor groups can form an ordered spatial network, so that the sensor groups have certain spatial correlation, thereby better analyzing and researching the spatial variation rule of the wind speed and having important significance for the prediction and early warning of the wind speed. And the condition that the sensor density of certain areas is too high or too low is avoided, the wind speed distribution condition of the whole area can be reflected better, the data deviation caused by uneven sampling points is reduced, the accuracy and reliability of collecting wind speed data are improved, and the statistics and calculation of subsequent gas flow information are facilitated.
In one embodiment, as shown in fig. 3 and 5, the sensor group includes a temperature sensor 112 and a heat-sensitive wind speed sensor 113, and the measurement principle of the heat-sensitive wind speed sensor 113 is to calculate the wind speed by measuring the surface temperature change based on the cooling effect of the air flow on the sensor surface. The temperature sensor 112 is used to measure the ambient temperature around the thermosensitive wind speed sensor 113 to correct the output of the thermosensitive wind speed sensor 113 so that it can provide accurate and stable wind speed measurement results at different temperatures.
Further, the sensitivity of the thermosensitive wind speed sensor is in the range of 0.01m/s to 0.5 m/s. The wind speed precision of the thermosensitive wind speed sensor is within the range of +/-0.1 m/s to +/-0.3 m/s. The wind speed measuring range of the thermosensitive wind speed sensor is 0-20 m/s. The wind speed resolution of the thermosensitive wind speed sensor is 0.01-0.02. The wind temperature range of the thermosensitive wind speed sensor is-20 ℃ to 60 ℃. The wind temperature precision of the thermosensitive wind speed sensor is within the range of +/-1 ℃ to +/-0.5 ℃. The wind temperature resolution of the thermosensitive wind speed sensor is in the range of 0-0.3 ℃. The wind speed response of the thermosensitive wind speed sensor is in the range of 0.5 s-3 s. The output signal of the thermosensitive wind speed sensor can adopt 0V-10V output signal or RS485 communication protocol, the probe of the thermosensitive wind speed sensor has the use temperature of-20 ℃ to 85 ℃ and the use humidity of 0 RH-90%RH. Acceptable temperature compensation of the thermosensitive wind speed sensor is within the range of-20 ℃ to 85 ℃. Therefore, the setting of the parameters can realize more accurate data measurement.
Further, the probe of the thermosensitive wind speed sensor is constructed into a spherical packaging structure, so that the perceived wind direction is more uniform, the uniformity of the measuring direction is ensured, and the wind speed values measured by the wind speed sensor are all true absolute values.
Further, the probe of the thermosensitive wind speed sensor is made of stainless steel materials and high polymer materials, so that the thermosensitive probe is not easy to damage and has higher sensitivity.
Further, the diameters of the probes of the thermosensitive wind speed sensor and the probes of the temperature sensor are smaller than 7mm, the probes are small in size, so that the probes are easier to install in a narrow space, the smaller probes can enable the thermosensitive wind speed sensor and the temperature sensor to sense the change of the environment faster, the tiny wind speed and the tiny temperature change can be captured more accurately, and more accurate measurement results are provided.
In one embodiment, as shown in fig. 2, the measurement apparatus includes: and a lifting device 40.
The lifting device 40 is connected to the support 30, and the lifting device 40 is used for driving the sensing unit 10 disposed on the support 30 to move along the height direction of the measuring device.
In the embodiment, the combined sensing units can be conveniently vertically moved by the lifting device, so that the complex operation of adjusting the whole measuring equipment can be saved, and the measuring equipment is suitable for measuring scenes with more heights.
Likewise, a rotation device can also be provided in the measuring apparatus. The rotating device is connected with the supporting piece and is used for driving the sensing unit arranged on the supporting piece to rotate.
In this embodiment, the rotation device conveniently enables the combined multiple sensing units to rotate around the fixed axis or the center point, so that the sensor on the sensing unit can conveniently and flexibly change along with the gas flow direction, and the complex operation of adjusting the whole device is saved, so as to adapt to the measurement scene with more angles.
For example, the rotation means may be a universal wheel provided below the support member, or a rotatable universal joint, a pin or the like provided at the connection of the support member and the connection rod.
In the practical application scenario, as shown in fig. 5, the opening angle of the ventilation opening of the thermosensitive wind speed sensor 113 is between-45 ° and 45 °, so that the wind speed amplitude is between-45 ° and 45 ° through the design of the ventilation opening of the sensor, the problem of large measurement difference caused by excessively increasing the flow speed of the gas flowing through the probe due to the excessively large opening angle is avoided, meanwhile, the flowing gas contacted by the sensor probe can be ensured, the sensitivity and the response speed of the sensor probe are improved, and the error of the direction deflection angle is avoided, so that the measured wind speed is more stable and reliable. And an opening approaching 90 deg. may reduce the likelihood of dust and foreign matter accumulating on the vent, thereby reducing the risk of contamination of the probe of the thermal wind speed sensor 113.
In one embodiment, as shown in FIG. 4, the processor 115 comprises: a housing 1151, a circuit board 1152, a connection 1153 and a transmission line 1154.
The circuit board 1152 is disposed in the housing 1151, the housing 1151 is connected to the bracket 111 through a connection member 1153, and the processors 115 of the sensing units 10 are connected through transmission lines 1154. The internal circuit board 1152 is protected by a housing 1151, thereby extending the useful life of the processor 115. The housing 1151 is coupled to the support 111 by a coupling 1153. The circuit board 1152 is embedded with a wind speed temperature characteristic fitting algorithm, a surface wind speed algorithm, a chart generation and other related control programs, so that the instantaneous surface wind speed of each point can be measured and displayed in real time, and the chart is automatically generated, thereby effectively judging the uniformity of the measured surface wind speed. The processors 115 of the plurality of sensing units 10 are connected in series through a transmission line 1154.
Further, the circuit board includes: a temperature compensation circuit and a data processing circuit. The temperature compensation circuit is used for correcting the wind speed value acquired by the heat-sensitive sensor according to the temperature value output by the temperature sensor; the data processing circuit is used for determining gas flow information according to the corrected wind speed value.
In this embodiment, the compensation function corresponding to the different temperature values is determined in advance according to the temperature-output curve obtained by measuring the thermosensitive wind speed sensor at the different temperatures. After the processor obtains the wind speed value acquired by the heat-sensitive sensor, substituting the temperature value output by the temperature sensor into the compensation function to obtain a compensation value. And then the compensation value is applied to the output wind speed value of the thermosensitive wind speed sensor so as to finish correcting the wind speed value acquired by the thermosensitive sensor and obtain accurate wind speed data after temperature compensation. Therefore, by performing temperature compensation and correction on measurement deviation caused by temperature change, the influence of the ambient temperature on the measurement result of the wind speed sensor is avoided, and the accuracy of the measurement result is improved. Moreover, the measuring equipment can be suitable for a wider temperature range, and the wind speed measuring requirement of complex environmental conditions is met.
It is understood that the compensation function may be a linear interpolation algorithm or a curve fitting algorithm, etc.
It will be appreciated by those skilled in the art that the structure of the measuring device for gas flow information provided in this embodiment is not limited to the measuring device for gas flow information, and may include more or fewer components, or may be a combination of certain components, or may be a different arrangement of components.
Before the measuring equipment is put into use, calibration and correction can be performed in a laboratory wind tunnel, so that the wind speed sensor can completely meet the requirement of measuring accuracy. After the measuring equipment is started, environmental tests such as aging, temperature, moisture resistance and the like can be performed for a certain time so as to adapt to the current environment.
In an embodiment, as shown in fig. 7, there is provided a method for measuring gas flow information in the present embodiment, which is applicable to the apparatus for measuring gas flow information provided in the above embodiment, the method comprising:
step 510, acquiring wind speed values acquired by a plurality of thermosensitive wind speed sensors at different sampling moments in real time;
it should be noted that, in this embodiment, the execution body of the measurement method is a processor of the measurement apparatus.
And step 520, determining gas flow information of the space where the measuring equipment is located according to the wind speed value.
The gas flow information comprises at least one of surface wind speed, surface wind speed uniformity score, air quantity and ventilation times.
In this embodiment, first, the measuring device is arranged in the space to be measured. And at different sampling moments, a plurality of thermosensitive wind speed sensors configured by the measuring equipment respectively acquire wind speed values of the airflow at different moments. Then, the air flow information such as the surface air speed, uniformity score, air quantity, ventilation frequency and the like of the space where the measuring equipment is located can be calculated according to the average of the air speed values of the plurality of sensors. Thereby effectively evaluating the gas flow condition in the space and providing an important reference for improving the air quality in the space.
Further, as a refinement and extension of the foregoing embodiment, for fully explaining the implementation process of the embodiment, when the gas flow information includes the face wind speed, step 520, that is, determining the gas flow information of the space where the measuring device is located according to the wind speed value, specifically includes:
521-1, determining the instantaneous plane wind speed at any sampling moment according to the wind speed values acquired by the plurality of thermosensitive wind speed sensors at any sampling moment in real time;
the plane wind speed refers to an average value of wind speeds of a plane where the vertical sensing unit is located, and can be specifically divided into an instantaneous plane wind speed and an average plane wind speed within a period of time. The wind speed value is in m/s.
Step 521-2, determining an average surface wind speed of the target period according to the instantaneous surface wind speed at the sampling time within the target period.
The target period can be reasonably set according to measurement requirements, such as 1 hour, 2 days, 5 weeks, and the like.
In this embodiment, the average value of the wind speed values acquired by a plurality of thermosensitive wind speed sensors at the same sampling time is taken as the instantaneous plane wind speed at the sampling time. And calculating the average value of the instantaneous plane wind speeds at a plurality of sampling moments in the target period to obtain the average plane wind speed of the plane where the sensing unit of the measuring equipment is positioned in the target period. Therefore, the possible difference of wind speeds at different positions is fully considered, a more representative surface wind speed result can be obtained more accurately by utilizing a plurality of wind speed values, the influence of errors of single measuring points on the result is reduced, the gas flow condition in the space is effectively evaluated, and an important reference is provided for improving the air quality in the space.
Specifically, the instantaneous and average surface wind speeds are calculated using the following formulas:
in the method, in the process of the invention,instantaneous plane wind speed, v, representing the j-th sampling instant i Representing the acquired instantaneous wind speed values of the sensor group (measuring point) i, a representing the number of sensor groups (measuring points) of the measuring device layout, +.>Representing the average face wind speed, b represents the number of multiple sampling time points within the target period.
Further, as a refinement and extension of the foregoing embodiment, for fully explaining the implementation process of the embodiment, when the gas flow information includes the surface wind speed uniformity score, step 520, that is, determining the gas flow information of the space where the measuring device is located according to the wind speed value, specifically includes:
522-1, generating a wind speed change curve at any sampling moment according to the maximum value in the target wind speed values at any sampling moment;
the target wind speed value is a wind speed value acquired by a thermosensitive wind speed sensor positioned on a target reference line in a plurality of sensing units. As shown in fig. 6, the test device is provided with 6 sensing units, each group representing one sensing unit. The sensing unit is provided with 6 sensor groups, and each sensor group on the sensing unit serves as a measuring point (black point in fig. 6). The reference lines represent straight lines running through and perpendicular to the sensing units, and thus each reference line will include 6 sensor groups located on different sensing units, respectively.
For example, the wind speed values (unit: m/s) automatically recorded at each measurement point at the same sampling time are shown in table 1, and a histogram and a wind speed variation curve can be automatically generated based on the wind speed values in table 1 as shown in fig. 8.
TABLE 1
| Name of the name | Datum line 1 | Datum line 2 | Reference line 3 | Reference line 4 | Reference line 5 | Datum line 6 |
| A set of | 0.41 | 0.42 | 0.42 | 0.43 | 0.42 | 0.41 |
| Two groups of | 0.41 | 0.43 | 0.43 | 0.43 | 0.42 | 0.41 |
| Three groups of | 0.41 | 0.43 | 0.44 | 0.44 | 0.42 | 0.42 |
| Four groups of | 0.41 | 0.43 | 0.45 | 0.45 | 0.42 | 0.42 |
| Five groups | 0.42 | 0.42 | 0.44 | 0.43 | 0.42 | 0.41 |
| Six groups of | 0.41 | 0.41 | 0.42 | 0.43 | 0.42 | 0.41 |
The curve generated automatically in real time can be known, and the more gradual the curve is in the vertical direction, the better the wind speed uniformity of the measured surface is, and the higher the surface wind speed uniformity score is.
Step 522-2, determining a face wind speed uniformity score from the curvature of the wind speed variation curve.
Wherein the larger the curvature of the wind speed variation curve, the lower the surface wind speed uniformity score.
In the embodiment, a wind speed change curve is generated according to the maximum value in target wind speed values acquired in real time at any sampling moment by the thermosensitive wind speed sensor positioned at the same straight line position, so that the change trend and the amplitude of the wind speed at different measuring positions can be reflected, the method is not only limited to the wind speed value at a certain position, and the fluctuation of the wind speed is conveniently and comprehensively displayed. And then the uniformity of the wind speed of the surface is directly judged according to the curvature of the wind speed change curve, the uniformity of the wind speed in the whole sampling time can be estimated, and references are provided for the design and optimization of the gas flow.
Further, as a refinement and expansion of the specific implementation of the foregoing embodiment, for fully explaining the specific implementation process of the present embodiment, when the gas flow information includes the air volume and the ventilation times, step 520, that is, determining the gas flow information of the space where the measuring device is located according to the air speed value, specifically includes:
step 523-1, obtaining the cross-sectional area of the air port of the space where the measuring equipment is located, the number of middle air ports of the space where the measuring equipment is located and the volume of the space where the measuring equipment is located;
523-2, determining the air quantity of the air port according to the average surface air speed and the cross sectional area of the air port;
specifically, the following formula is adopted for determining the air volume of the air port:
wherein Q represents the air volume of the air port (unit is m 3 S represents the cross-sectional area of the tuyere (unit is m) 2 )，Representation ofAverage surface wind speed of each measuring point in the measured plane.
Step 523-3, determining the total air supply amount of the space where the measuring equipment is located according to the air quantity of the air ports and the quantity of the air ports;
step 523-4, determining the ventilation times according to the total air supply amount and the volume.
Specifically, the following formula is used for determining the ventilation times:
wherein N represents the number of ventilation times (in units of times/h) in the space, and Q represents the air volume (in units of m 3 V represents the volume of space (in m) 3 ) C represents the number of tuyeres (in units of one), and k represents a conversion constant.
In the embodiment, through calculating the air quantity and the ventilation times, the circulation of the air in the space can be effectively controlled, the space can be ensured to obtain enough air, the accumulation of carbon dioxide, harmful gas and pollutants is avoided, the indoor humidity level can be controlled, the air is prevented from being excessively dry or moist, the unnecessary energy loss is reduced, the energy consumption is reduced, and the energy utilization efficiency is improved.
Further, in an embodiment, before step 520, the method for measuring gas flow information further includes: acquiring a temperature value acquired by a temperature sensor; determining a temperature compensation function according to the temperature value; and correcting the wind speed value acquired by the heat-sensitive sensor according to the temperature compensation function.
In this embodiment, the compensation function corresponding to the different temperature values is determined in advance according to the temperature-output curve obtained by measuring the thermosensitive wind speed sensor at the different temperatures. After the processor obtains the wind speed value acquired by the heat-sensitive sensor, substituting the temperature value output by the temperature sensor into the compensation function to obtain a compensation value. And then the compensation value is applied to the output wind speed value of the thermosensitive wind speed sensor so as to finish correcting the wind speed value acquired by the thermosensitive sensor and obtain accurate wind speed data after temperature compensation. Therefore, by performing temperature compensation and correction on measurement deviation caused by temperature change, the influence of the ambient temperature on the measurement result of the wind speed sensor is avoided, and the accuracy of the measurement result is improved. Moreover, the measuring equipment can be suitable for a wider temperature range, and the wind speed measuring requirement of complex environmental conditions is met.
It is understood that the compensation function may be a linear interpolation algorithm or a curve fitting algorithm, etc.
Those skilled in the art will appreciate that the drawings are merely schematic illustrations of one preferred implementation scenario, and that the modules or flows in the drawings are not necessarily required to practice the present application. Those skilled in the art will appreciate that modules in an apparatus in an implementation scenario may be distributed in an apparatus in an implementation scenario according to an implementation scenario description, or that corresponding changes may be located in one or more apparatuses different from the implementation scenario. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.
The foregoing application serial numbers are merely for description, and do not represent advantages or disadvantages of the implementation scenario. The foregoing disclosure is merely a few specific implementations of the present application, but the present application is not limited thereto and any variations that can be considered by a person skilled in the art shall fall within the protection scope of the present application.
Claims (10)
1. A measurement device for gas flow information, the measurement device comprising:
a plurality of sensing units, the sensing units comprising:
the bracket is constructed into a strip-shaped structure, and a plurality of vent holes are formed in the bracket;
the sensor groups are arranged on the bracket through a fixing plate, the sensor groups are connected in series, the vent holes are positioned between two adjacent sensor groups, and each sensor group comprises a temperature sensor and a thermosensitive wind speed sensor;
the processor is electrically connected with the plurality of sensor groups, is arranged at one end of the bracket and is used for determining gas flow information of a space where the measuring equipment is located according to a wind speed value acquired by the thermosensitive wind speed sensor, wherein the gas flow information comprises at least one of surface wind speed, surface wind speed uniformity score, wind quantity and ventilation times;
the connecting rod is provided with a connecting hole, the connecting hole is detachably connected with the sensing units, and the connecting rod is used for combining a plurality of sensing units;
and the supporting piece is connected with the connecting rod.
2. The apparatus for measuring gas flow information according to claim 1, characterized in that the apparatus comprises:
the lifting device is connected with the supporting piece and is used for driving the sensing unit arranged on the supporting piece to move along the height direction of the measuring equipment; and/or the number of the groups of groups,
the rotating device is connected with the supporting piece and is used for driving the sensing unit arranged on the supporting piece to rotate.
3. The apparatus for measuring gas flow information according to claim 1, wherein,
the opening angle of the ventilation opening of the thermosensitive wind speed sensor is between-45 degrees and 45 degrees, the sensitivity of the thermosensitive wind speed sensor is in the range of 0.01m/s to 0.5m/s, and the wind speed precision of the thermosensitive wind speed sensor is in the range of +/-0.1 m/s to +/-0.3 m/s;
the probe of the thermosensitive wind speed sensor is constructed into a spherical packaging structure and is made of stainless steel materials and high polymer materials;
the diameters of the probe of the thermosensitive wind speed sensor and the probe of the temperature sensor are smaller than 7mm.
4. The apparatus for measuring gas flow information according to claim 1, wherein,
the sensing units are arranged in parallel, and the distance between two adjacent sensing units is 5 cm-50 cm;
the distance between two adjacent sensor groups on the same sensing unit is the same as the distance between two adjacent sensing units.
5. The apparatus for measuring gas flow information according to claim 1, wherein the processor comprises:
a housing;
the circuit board, the circuit board set up in the casing, the circuit board includes:
the temperature compensation circuit is used for correcting the wind speed value acquired by the heat-sensitive sensor according to the temperature value output by the temperature sensor;
the data processing circuit is used for determining the gas flow information according to the corrected wind speed value;
the connecting piece is connected with the shell and the bracket;
and the transmission line is used for connecting processors of other sensing units in series.
6. A measurement method based on the gas flow information of the measurement apparatus according to any one of claims 1 to 5, characterized in that the method comprises:
acquiring wind speed values acquired by a plurality of thermosensitive wind speed sensors at different sampling moments in real time;
and determining gas flow information of the space where the measuring equipment is located according to the wind speed value, wherein the gas flow information comprises at least one of surface wind speed, surface wind speed uniformity score, air quantity and ventilation times.
7. The method for measuring gas flow information according to claim 6, wherein the gas flow information includes a face wind speed, and the determining gas flow information of a space in which the measuring apparatus is located according to the wind speed value includes:
determining the instantaneous plane wind speed at any sampling moment according to the wind speed values acquired by the plurality of thermosensitive wind speed sensors at any sampling moment in real time;
and determining the average surface wind speed of the target period according to the instantaneous surface wind speed at the sampling time in the target period.
8. The method of claim 6, wherein the gas flow information includes a face wind speed uniformity score, and wherein determining the gas flow information for the space in which the measurement device is located based on the wind speed value comprises:
generating a wind speed change curve at any sampling moment according to the maximum value in target wind speed values at any sampling moment, wherein the target wind speed values are wind speed values acquired by the thermosensitive wind speed sensors positioned on a target reference line in a plurality of sensing units;
and determining the surface wind speed uniformity score according to the curvature of the wind speed change curve, wherein the larger the curvature of the wind speed change curve is, the lower the surface wind speed uniformity score is.
9. The method for measuring gas flow information according to claim 7, wherein the gas flow information includes an air volume and a ventilation number, and the determining the gas flow information of the space in which the measuring apparatus is located according to the air speed value includes:
acquiring the cross-sectional area of a tuyere of a space where the measuring equipment is located, the number of middle tuyeres of the space where the measuring equipment is located and the volume of the space where the measuring equipment is located;
determining the air quantity of the air port according to the average surface air speed and the cross sectional area of the air port;
determining the total air supply amount of the space where the measuring equipment is located according to the air quantity of the air outlets and the quantity of the air outlets;
and determining the ventilation times according to the total air supply amount and the volume.
10. A method of measuring gas flow information according to any one of claims 6 to 9, wherein before determining the gas flow information of the space in which the measuring device is located from the wind speed value, the method further comprises:
acquiring a temperature value acquired by the temperature sensor;
determining a temperature compensation function according to the temperature value;
and correcting the wind speed value acquired by the heat-sensitive sensor according to the temperature compensation function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311315154.5A CN117517703A (en) | 2023-10-11 | 2023-10-11 | Gas flow information measuring device and gas flow information measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311315154.5A CN117517703A (en) | 2023-10-11 | 2023-10-11 | Gas flow information measuring device and gas flow information measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117517703A true CN117517703A (en) | 2024-02-06 |
Family
ID=89744634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311315154.5A Pending CN117517703A (en) | 2023-10-11 | 2023-10-11 | Gas flow information measuring device and gas flow information measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117517703A (en) |
-
2023
- 2023-10-11 CN CN202311315154.5A patent/CN117517703A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4942763A (en) | Flow sensor assembly | |
| CN109855835B (en) | Wind tunnel inner section wind speed monitoring device, monitoring system and monitoring method | |
| CN116147882B (en) | Low-speed wind tunnel flow field parameter measuring device and method | |
| CN109098995B (en) | Method and device for testing performance of air duct and fan of traction motor cooling system | |
| CN209945580U (en) | Data machine room local hot spot detection system applying wireless temperature sensor and unmanned aerial vehicle for accurate positioning | |
| US20210247091A1 (en) | Airstream sensor devices, systems and methods | |
| US20190017717A1 (en) | Airstream Sensor Devices, Systems and Methods | |
| CN117517703A (en) | Gas flow information measuring device and gas flow information measuring method | |
| CN110261007A (en) | A kind of application radio temperature sensor and the pinpoint data center computer room hot localised points detection system of unmanned plane and method | |
| Janbakhsh et al. | A newly designed supply diffuser for industrial premises | |
| CN204270182U (en) | Constant temperature and humidity deformeter | |
| GB2614967A (en) | Gas detection system and detection method | |
| CA3169641C (en) | Airstream sensor devices, systems and methods | |
| US5517862A (en) | Apparatus and method for measuring ventilation flow exiting a spinning rotor | |
| Berckmans et al. | Test installation to develop a new model concept to model and control the energy and mass transfer in a three dimensional imperfectly mixed space. | |
| CN210070985U (en) | Intelligent temperature and humidity verification box | |
| CN111829691B (en) | Device and method for transient measurement of wind temperature of non-neutral boundary layer | |
| CN111123406A (en) | Handheld meteorological instrument temperature data fitting method | |
| CN117171532B (en) | Leakage monitoring method and device for air conditioner air supply system of data center module machine room | |
| CN110672345A (en) | Performance evaluation system and method for counter-flow type dew point evaporation water-cooling air conditioner | |
| CN210893608U (en) | Gas flow velocity measurement experiment wind tunnel | |
| CN219122446U (en) | Spherical universal wind speed, wind direction and wind temperature monitor | |
| CN209656188U (en) | A kind of air-conditioning system efficiency of cooling tower tester | |
| CN219935879U (en) | Accurate wind speed monitoring device with compensation suitable for cross section | |
| CN116222681B (en) | In-situ flow measuring device and method for hole-shaped or slit-shaped flow paths |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |