CN111175531B - Channel space wind speed detection system and application method thereof - Google Patents

Abstract

A channel space wind speed detection system and a use method thereof comprise the following steps: the wind speed measuring device comprises a bottom bracket, a vertical supporting device, a rotating device, a wind speed sensor mounting device and a rotary positioning locking device, wherein the bottom bracket is connected with the vertical supporting device, the rotating device is mounted on the vertical supporting device, the wind speed sensor mounting device is mounted on the rotating device, and the wind speed sensor mounting device rotates to a set angle around the center of the rotating device and is locked through the rotary positioning locking device. According to the invention, the wind speed measuring device is used for collecting, storing, processing and displaying the wind speed data of the airflow field with the space cross section of the non-rectangular channel, the omnibearing wind speed measurement can be realized without moving the sensor for many times, and the wind speeds at the center, the periphery and the edges of the channel are measured.

Description

Channel space wind speed detection system and application method thereof

Technical Field

The invention relates to the technical field of wind speed measurement, in particular to a channel space wind speed detection system and a use method thereof.

Background

The safety indexes inside the existing subway or the existing platform and tunnel mainly comprise structures, water resistance, fire resistance and the like. The smoke prevention and exhaust system is one of fire protection systems with extremely important fire prevention and is closely related to personnel evacuation, and smoke exhaust wind speeds of underground stations and section tunnels are important indexes of smoke prevention and exhaust design.

When the channel space is relatively airtight and narrow, the formation of the internal airflow and speed has the following characteristics: the direction of the airflow and the resulting wind speed are different from location to location. For example, when a fire disaster occurs in a public area of a subway station platform layer, in order to form downward air flow at a junction of a station hall and a platform so as to effectively control upward spreading of smoke, the downward air speed at the junction of the station hall and the platform needs to be at least 1.5m/s, and the direction of escape of passengers is opposite, so that safe evacuation of people can be ensured. When fire disaster occurs in the subway section tunnel, the air flow speed is ensured to be higher than the critical air speed so that the smoke flows in a specified direction, and people face the fresh air direction to carry out safe evacuation, and the flow speed of the smoke exhaust air flow on the section of the tunnel is required to be not less than 2m/s and not more than 11m/s.

In the prior art, the wind speed measuring device is connected with the array support through the movable connecting component, the wind speed sensors of the wind speed measuring device are distributed on the array support in an array mode, when the wind speed at other positions on the cross section is measured, the movable connecting components are required to be moved, meanwhile, the lifting height of the array support is adjusted through the movable connecting components, the measurement of wind speed data in a rectangular range is realized, the wind speed is measured through moving the support rods on the array support for many times, and meanwhile, the wind speed at the arc-shaped edge around the channel cannot be measured.

Disclosure of Invention

The invention aims to solve the problems, and provides a channel space wind speed detection system with simple structure, convenient use and omnibearing measurement and a use method thereof.

The technical scheme provided comprises the following steps:

in the channel space wind speed detection system of the present invention, it comprises: the wind speed measuring device comprises a bottom bracket, a vertical supporting device, a rotating device, a wind speed sensor mounting device and a rotary positioning locking device, wherein the bottom bracket is connected with the vertical supporting device, the rotating device is mounted on the vertical supporting device, the wind speed sensor mounting device is mounted on the rotating device, and the wind speed sensor mounting device rotates to a set angle around the center of the rotating device and is locked through the rotary positioning locking device.

In the channel space wind speed detection system, the bottom support comprises a sleeve, a fixed ring, three external support rods, three bottom support rods and a lock nut, wherein the sleeve is sleeved on the vertical support device, the three fixed rings are welded on the sleeve and uniformly distributed along the circumferential direction of the sleeve, one ends of the three bottom support rods are movably connected with the fixed rings, the other ends of the bottom support rods are respectively and movably connected with one ends of the three external support rods, the other ends of the three external support rods are movably connected with the vertical support device, the device is stably placed on the ground through the triangular stable property when the three external support rods are positioned at a set inclination angle, and the sleeve slides upwards along the vertical support device until the three bottom support rods are attached to the vertical support device.

In the channel space wind speed detection system, the central part of the bottom bracket is provided with a first balancing weight, the first balancing weight is provided with a central concave part, and the bottom of the vertical supporting device is inserted into the central concave part of the first balancing weight.

In the channel space wind speed detection system, the bottom bracket can be connected with three balancing weights at the same time, the three balancing weights are all provided with central concave parts, and the balancing weights are respectively connected with the bottom ends of three external supporting rods of the bottom bracket.

In the channel space wind speed detection system, the vertical supporting device is provided with a first vertical supporting rod and a second vertical supporting rod, and the first vertical supporting rod is connected with the second vertical supporting rod through a telescopic adjusting device.

In the channel space wind speed detection system, the rotating device comprises a fixed disc, a rotating disc, a first fixed supporting rod, a second fixed supporting rod, a first movable supporting rod and a second movable supporting rod, wherein a level gauge is arranged on the fixed disc, a mark for displaying the degree of an included angle with a horizontal line is carved on the circumferential edge of the fixed disc, the rotating disc and the fixed disc are assembled concentrically through a locking nut and rotate around the fixed disc, one end of the first fixed supporting rod and one end of the second fixed supporting rod are fixedly connected with the rotating disc, one end of the first fixed supporting rod and one end of the first movable supporting rod are connected, the other end of the second fixed supporting rod is connected with one end of the second movable supporting rod, the first fixed supporting rod, the second fixed supporting rod, the first movable supporting rod and the second movable supporting rod are all positioned on the same axis, the axis passes through the circle center of the rotating disc, and the rotating disc is fixed on the fixed disc through a rotary positioning locking device when the rotating disc rotates to a set angle position.

In the channel space wind speed detection system, the rotary positioning locking device consists of a pin hole, a locking positioning pin and positioning holes on a rotary disc, when the wind speed of each test point distributed along the radial direction at multiple angles of 45 degrees such as 0 degree, 45 degrees, 90 degrees and 135 degrees is measured, the same circumference of the fixed disc is provided with a first positioning hole, a second positioning hole, a third positioning hole, a fourth positioning hole and a fifth positioning hole, wherein the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole are uniformly or discretely distributed along the circumferential direction of the fixed disc according to the multiple angles of 45 degrees, the included angle between the first positioning hole and a horizontal line is 45 degrees, the fifth positioning hole is positioned at the bisecting angle of any two adjacent holes of the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole, and the rotary disc is provided with four pin holes which are uniformly distributed, and the four pin holes are in one-to-one correspondence with the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole on the fixed disc.

In the channel space wind speed detection system, the rotary positioning locking device consists of a rotary disc, damping materials and a fixed disc, wherein through holes are formed in the centers of the rotary disc, the damping materials and the fixed disc, the damping materials are positioned between the rotary disc and the fixed disc, a groove is formed in one surface of the fixed disc, which is close to the rotary disc, the damping materials are placed in the groove, the other surface of the damping materials is in contact with the rotary disc, a long bolt penetrates through the rotary disc, the damping materials and the fixed disc through holes, and the rotary disc, the damping materials and the fixed disc are connected through nuts.

In the channel space wind speed detection system of the invention, the rotating device may only comprise a fixed disc, the fixed disc is sequentially and uniformly welded with a first fixed support rod, a second fixed support rod, a third fixed support rod, a fourth fixed support rod, a fifth fixed support rod, a sixth fixed support rod, a seventh fixed support rod and an eighth fixed support rod in a counterclockwise direction according to multiple angles of 45 degrees such as 0 degree, 45 degrees, 90 degrees, 135 degrees and the like, and the first fixed support rod and the horizontal line included angle are 0 degree.

In the channel space wind speed detection system, a wind speed sensor mounting device comprises a wind speed sensor connecting rod and a sensor clamping device, wherein the wind speed sensor is fixed on the wind speed sensor connecting rod through the sensor clamping device, and a protective sleeve is sleeved on the wind speed sensor.

In the channel space wind speed detection system, the wind speed sensor connecting rods are fixed on a first fixed supporting rod, a second fixed supporting rod, a first movable supporting rod and a second movable supporting rod of the rotating device through the connecting rod clamping device, the wind speed sensor connecting rods are distributed at equal angles along the circumferential direction of the rotating device, and the wind speed sensors are distributed at equal intervals or non-equal intervals along the radial direction. The wind speed sensor can be of a directional type or a non-directional type, and when the wind speed sensor is of a directional type, after the protective sleeve of the wind speed sensor is taken down, the wind speed sensor is firstly adjusted to be in a windward direction, and then wind speed test is carried out; when the wind speed sensor is non-directional, the wind speed test can be performed after the protective sleeve of the wind speed sensor is taken down.

In the channel space wind speed detection system, the wind speed measurement device is connected with the data acquisition memory through a cable, the data acquisition memory is in communication connection with the data processing display device through a data line, the wind speed measurement device is used for measuring the wind speed of the airflow field of the cross section of the channel space, the data acquisition memory is used for acquiring and storing the wind speed sensing data of the airflow field measured by the wind speed measurement device and outputting the data to the data processing display device, and the data processing display device is used for processing the wind speed data so as to obtain the wind speed value of the airflow field meeting the standard regulation.

The application method of the channel space wind speed detection system comprises the following steps:

step 1: acquiring channel space data to be detected, and setting the number n of wind speed sensors in the wind speed testing device, the length L of a wind speed sensor connecting rod and the installation position of a bottom bracket according to the channel space data;

step 2: the vertical supporting device, the rotating device and the wind speed sensor mounting device are sequentially connected to the bottom bracket, the wind speed sensor is adjusted to a set mounting position and clamped, the wind speed sensor is connected with the data acquisition memory through a cable, and the data acquisition memory is in communication connection with the data processing display device through a data line;

Step 3: taking down a protective sleeve of the wind speed sensor, switching on a power supply, testing whether the working state of the wind speed sensor is normal, and returning to the step 2 if the working state of the wind speed sensor is abnormal;

step 4: according to the wind speed direction, adjusting the direction of a wind speed sensor, adjusting a connecting rod of the wind speed sensor to a first detection angle, fixing a rotary disc on a fixed disc through a rotary positioning locking device, detecting the wind speed of a channel space according to a set time, collecting, storing, processing and displaying, and sleeving a protective sleeve of the wind speed sensor on the wind speed sensor after the detection is finished;

step 5: adjusting a connecting rod of the wind speed sensor to set a second detection angle, fixing the rotary disc on the fixed disc through the rotary locking device, taking down a protective sleeve of the wind speed sensor, detecting the wind speed of the channel space according to set time, and collecting, storing, processing and displaying;

step 6: repeating the steps 3-5 until all the detection angles are detected, sleeving a protective sleeve of the wind speed sensor on the wind speed sensor, cutting off the power supply, completing wind speed detection of all the angles, and outputting a wind speed detection numerical value record table on a data processing display device.

The invention provides a channel space wind speed detection system and a use method thereof, which can realize wind speed at a multiple angle of 45 degrees by rotating a rotating device without moving each connecting support rod, and simultaneously measure wind speed data in a circular range, so as to realize angle measurement of all directions on a cross section and wind speed at arc-shaped positions around a channel.

Drawings

FIG. 1 is a schematic diagram of a system for detecting wind speed in a space of a passage in embodiment 1

FIG. 2 is a rear view of a schematic diagram of a wind speed measuring device in embodiment 1

FIG. 3 is a schematic diagram of a wind speed measurement device employing a wind speed sensor connection rod

FIG. 4 is a left side view of the rotary device of embodiment 1 in the latch mode

FIG. 5 is a sectional view of the rotary device of embodiment 1 in the damping mode

FIG. 6 is a schematic structural view of the bottom bracket in examples 1-3

FIG. 7 is a front view of the embodiment 1-3 using three weight blocks for connection

FIG. 8 is a partial cross-sectional view of the weight in examples 1-3

FIG. 9 is a partial cross-sectional view of the connection of the bottom bracket to the weight in examples 1-3

FIG. 10 is a schematic view of the rotary device of example 1 rotated to an angle of 45 degrees

FIG. 11 is a schematic diagram of example 2

FIG. 12 is a schematic view showing an arrangement of wind speed sensors in embodiments 2-3

FIG. 13 is a schematic view of example 3

FIG. 14 is a partial cross-sectional view showing the connection between the vertical supporting means and the telescopic adjusting means in embodiments 1 to 3

FIG. 15 is a sectional view of cable 1, second wind speed sensor connecting rod 2, sensor clamping device 3, wind speed sensor 4, connecting rod clamping device 5, second movable supporting rod 6, second fixed supporting rod 7, lock nut 8, positioning hole 9, first fixed supporting rod 10, first movable supporting rod 11, first wind speed sensor connecting rod 12, first vertical supporting rod 13, rotational positioning tightening device 14, fixed disk 15, telescoping device 16, second vertical supporting rod 17, fixed ring 18, outer supporting rod 19, bottom supporting rod 20, weight 21, screw 22, rotational disk 23, spacer 24, damping material 25, pin hole 26, fixed ring 27, sleeve 28, baffle 29, trapezoid-shaped central recess 30, cuboid-shaped inward recess 31, wind speed sensor connecting rod 32, upper end portion 33, through hole 34 for fitting with first vertical supporting rod, lower end portion 35, through hole 36 for fitting with second vertical, test section center 37, test section outer boundary 38, ground 39, supporting rod 40, level gauge 40 of the telescoping device in examples 1-3

Detailed Description

Because the space area in the traffic tunnel is limited, the existing wind speed measuring device is difficult to transport and install, and the wind speed measuring device needs to be moved for many times to realize the measurement of wind speed data in a large range. The cross section of the existing traffic tunnel space usually adopts special or irregular cross sections such as arched/trapezium, for example, the cross section of a tunnel in a certain section of a subway adopts a horseshoe shape formed by multiple arcs. The tunnels with the cross section shapes have respective flow field characteristics, the distribution mode and the wind quantity calculation process are relatively complex, the size of the cross section of the tunnel, the wall surface are rough, and a plurality of resistance components are arranged to influence the distribution of the wind speed fields of the cross section, so that the analysis and the research of the wind speed fields of the cross section are difficult, and meanwhile, the wind speed at the circular arc boundary of the cross section cannot be measured by using a conventional wind speed measuring device. Therefore, the specific embodiment aims at the problem that the wind speed data at the circular arc edge is difficult to detect for the cross section of the irregular shape of the traffic tunnel, and provides a technical scheme for carrying out multi-point wind speed measurement on the cross section of the irregular shape, so that the test work of the performance of the smoke prevention and exhaust system in the traffic tunnels of different shapes is satisfied.

The embodiment provides a channel space wind speed detection system, which comprises: the wind speed measuring device comprises a bottom bracket, a vertical supporting device, a rotating device, a wind speed sensor mounting device and a rotary positioning locking device.

The bottom support comprises a sleeve, a fixed ring, three external support rods, three bottom support rods and locking nuts, wherein the bottom support is movably connected with the vertical support device through the fixed ring and the sleeve, the three bottom support rods are uniformly distributed along the circumference of the sleeve, one end of the three bottom support rods is movably connected with the sleeve through the fixed ring, the sleeve is sleeved on the second vertical support rod, the other ends of the three bottom support rods and one end of the three external support rods are movably connected with the other ends of the three external support rods through the fixed ring and the second vertical support rods, the three support rods are uniformly distributed along the circumference of the second vertical support rods, the fixed ring is locked through the locking nuts when the three support rods are positioned at a set inclination angle, the device is stably placed on the ground, and the device is prevented from toppling or deflecting through the stabilizing effect of the triangular device.

When the support is used, the positions of the three bottom support rods can be correspondingly adjusted according to the space position condition of the channel, and when the included angle between the external support rods and the vertical support device is reduced, namely, the three external support rods drive the three bottom support rods to shrink towards the central position, and meanwhile, the fixing ring drives the second vertical support to move upwards, so that the whole device moves upwards, and wind speed data in a high range can be measured; when the included angle between the external support rods and the vertical support device is increased, namely, the three external support rods drive the three bottom support rods to be far away from the center position, and meanwhile, the fixing ring drives the second vertical support to move downwards, so that the whole device moves downwards, and wind speed data in a low range can be measured; the free lifting or lowering of the vertical supporting device is realized by adjusting the external supporting rod.

When wind speed measurement is completed, the external support rods are folded towards the vertical support device, the sleeve can slide upwards along the vertical support device, and meanwhile, the bottom support rods are driven to be attached to the vertical support device until the three external support rods are attached to the three bottom support rods and the vertical support device, so that occupied space is reduced, and the device is convenient to store and transport.

The balancing weight connected with the bottom of the bottom support can be selected from cast iron balancing weight, cement balancing weight, plastic sand filling balancing weight or mixed pressing balancing weight and the like, the upper end of the balancing weight is a trapezoid body, the lower end of the balancing weight is in a cuboid shape, an inward concave part is arranged at the central part of the upper surface of the balancing weight, the concave part can be in a round shape, a rectangular shape, an elliptic shape and the like, the bottom of the vertical support rod and/or the bottom of the external support rod can be inserted into the central concave part, the bottom support is stabilized on the ground through the balancing weight, and the wind speed measuring device is prevented from being influenced by wind speed to generate deflection in the measuring process.

The vertical supporting device connected with the bottom bracket can connect the first vertical supporting rod and the second vertical supporting rod together through the threaded sleeve, and the vertical supporting device can also be a long rod directly.

Further, the vertical supporting device connected with the bottom bracket is used for connecting the first vertical supporting rod and the second vertical supporting rod together through the telescopic adjusting device, so that free lifting of the vertical supporting device is realized.

The telescopic adjusting device comprises an upper end part and a lower end part, wherein the upper end part and the lower end part of the telescopic adjusting device are in threaded connection, the upper end part is welded with the first vertical supporting rod, the lower end part is welded with the second vertical supporting rod, and the first vertical supporting rod is moved to a proper position through adjusting the effective contact length of the threaded connection of the upper end part and the lower end part of the telescopic adjusting device, so that the vertical supporting device can be freely lifted and fixed.

The effective length of the telescopic adjustment means at which the upper end portion and the lower end portion are screwed together may be any length, for example 20cm, 40cm, 50cm, 60cm, etc.

The fixed disc of the rotating device is welded with the first vertical supporting rod, a level gauge and an angle mark are arranged on the fixed disc, the level gauge can be arranged at the left side, the right side or the top end of the welding position of the fixed disc and the vertical supporting rod, and whether the position of the equipment is horizontal or not is determined by observing the level gauge; the angle marks are evenly distributed on the fixed disc in sequence along the axial outer edge position of the fixed disc, the rotating disc is rotated to enable the wind speed sensor installation device to rotate, the rotating angle position of the sensor installation device is directly observed through the angle marks, and the angle of the position can be known without manual measurement.

The number of degrees mark that the equal division was cut apart on fixed disc, in the halving scheme, its angle can equally divide into 4, and its number of degrees respectively is: 0 °, 90 °, 180 °, 270 °; or equally dividing the mixture into 6 parts, wherein the degrees of the mixture are respectively as follows: 0 °, 60 °, 120 °, 180 °, 240 °, 300 °; or equally dividing the mixture into 8 parts, wherein the degrees of the mixture are respectively as follows: 0 °, 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, 315 °, etc.

The rotary positioning locking device has two positioning locking modes: the first is a plug pin mode, and wind speed sensors are arranged according to a multiple angle of 45 degrees: the locking nut is loosened, the rotating disc is enabled to correspond to the holes in the fixed disc one by one, at least one locking locating pin is inserted into the corresponding hole after the locking nut is screwed down, the rotating device can be fixed, when the next set measuring angle is required to be measured, the locking locating pin is directly pulled out, and the rotating disc can be rotated after the locking nut is loosened. Through the quick extraction or the insertion of the locking locating pin, the operation time is saved, and the quick locking of the rotating device is realized.

The second is a damping mode, and wind speed data of any angle is measured: the damping material can be rubber and plastic damping plates, rubber and foam plastic or damping composite materials; the surface of the rotating disc, which is contacted with the damping material, adopts a surface with high roughness, or one or more radial transverse grooves are formed in the surface of the rotating disc so as to increase the roughness of the surface of the rotating disc, thereby increasing the friction force when the damping material and the rotating disc perform relative motion, rotating the rotating disc, locking the rotating disc with the fixed disc through a lock nut, preventing the lock nut from locking the rotating device through the high friction resistance generated by the contact of the rotating disc and the damping material, and then relatively sliding the rotating disc and the fixed disc, realizing the fixation of the rotating device, and realizing the wind speed measurement at any equal-dividing angle by rotating the rotating disc to the marked angle.

The fixed support rods and the movable support rods are connected together through screw sleeves, the movable support rods and the movable support rods are also connected together through screw sleeves, the number of the connected movable support rods can be determined on the fixed support rods according to the actual measured space conditions, two or more bolts are welded on each movable support rod, matched nuts are arranged on the bolts, and when the movable support rods and the fixed support rods are connected together through the screw sleeves and placed horizontally, the bolts and the vertical plane form 90 degrees.

The connecting rod clamping device is in a cuboid shape, a through hole, a connecting rod penetrating hole, a set screw and a threaded hole are arranged on the connecting rod clamping device, the connecting rod penetrating hole is located below the through hole and is distributed in a crossing mode with the through hole, a bolt on the movable supporting rod penetrates through the through hole and is matched with a nut to fix the connecting rod clamping device on the movable supporting rod, a wind speed sensor connecting rod penetrates through the connecting rod penetrating hole, the wind speed sensor connecting rod is connected with the movable supporting rod, and the threaded hole is formed in four: two threaded holes are positioned above the through hole and are parallel to the connecting rod penetrating hole, the two threaded holes are symmetrically distributed relative to the center line of the connecting rod penetrating hole, the other two threaded holes are positioned below the connecting rod penetrating hole and are parallel to the through hole, the threaded holes are symmetrically distributed relative to the center line of the through hole, and meanwhile, the screws are screwed into the threaded holes to fasten the device, and free installation and detachment of the movable support rod and/or the wind speed sensor connecting rod are realized through the connecting rod clamping device and the threaded sleeve, so that the device is convenient to detach and transport.

The wind speed sensor connecting rod is connected with a plurality of sensor clamping devices, the installation and the disassembly of a plurality of wind speed sensors are realized, the sensor clamping devices are in a cuboid shape, the upper surface of each sensor clamping device comprises a connecting rod penetrating hole, a sensor penetrating hole, a threaded hole and a set screw, the connecting rod penetrating holes and the sensor penetrating holes are distributed in a crossed manner, the sensor penetrating holes are positioned in front of the connecting rod penetrating holes, and the threaded holes are formed in two: one of the threaded holes is positioned in front of the sensor passing hole, is distributed in a crossing way with the sensor passing hole, is positioned in the center of the cross section, and is fastened by a set screw; the other threaded hole is positioned behind the connecting rod passing hole and is distributed in a crossing way with the connecting rod passing hole, and is positioned at the center part of the cross section, and meanwhile, the connecting rod passes through the set screw fastening device.

When the wind speed sensor is arranged, the wind speed sensor is not arranged on the wind speed sensor connecting rod at the position close to the edge of the disc of the rotating device, the wind speed sensor is not arranged at the outermost end of the wind speed sensor connecting rod, namely, the detector is not arranged at the circle center position of the whole test, and the detector is not arranged at the outermost edge of the circular section.

The wind speed sensor mounting device comprises a wind speed sensor connecting rod and a sensor clamping device. The wind speed sensor passes through the sensor passing hole to be fixed on the sensor clamping device, the sensor clamping device is fixed on the wind speed sensor connecting rod, the wind speed sensor connecting rod passes through the connecting rod passing hole to be fixed on the connecting rod clamping device, the connecting rod clamping device is fixed on the movable supporting rod through the bolt and nut in a matching way, in the measuring process, the rapid disassembly and the installation of the wind speed sensors with different requirements are realized according to actual conditions, and meanwhile, the direction of the wind speed sensor can be adjusted at any time according to the wind speed direction.

The wind speed measuring device is used for measuring the wind speed of the airflow field of the space cross section of the channel, the data acquisition memory is used for acquiring and storing the wind speed sensing data of the airflow field measured by the wind speed measuring device and outputting the data to the data processing display device, and the data processing display device is used for processing the wind speed data so as to obtain the wind speed value of the airflow field which accords with the standard.

Example 1:

in this embodiment, a notebook computer is used as the data processing display device, as shown in fig. 1 and 2, a multi-point environment testing system which is in communication connection with the notebook computer through a data line is used as the data acquisition memory, and the wind speed measuring device is connected with the multi-point environment testing system through a cable.

In the embodiment, a 6242 model multipoint environment test system is adopted, 16 templates can be installed, four-channel wind speed templates are selected as templates, four sensors can be connected to one template, and the wind speed sensors can adopt rod-shaped directional probes with the measuring range of 0.1-50 m/s.

In the embodiment, the rod-shaped directional probe is fixed on the wind speed sensor connecting rod through the sensor clamping device, a protective sleeve is sleeved on the rod-shaped directional probe, and the length of the wind speed sensor connecting rod is 270cm and the diameter of the wind speed sensor connecting rod is 2cm. The diameter of the connecting rod penetrating hole of the sensor clamping device is 2cm.

In the embodiment, 6 wind speed sensors are preferably installed on a wind speed sensor connecting rod connected with the first movable supporting rod, the numbers of the wind speed sensors are 1-6 in sequence outwards along the circle center of the rotating device, and the 6 wind speed sensors are distributed in non-equidistant mode along the radial direction. The preferred distribution is as follows: the 1 st wind speed sensor is located at 77.9cm from the center of the rotating device, the 2 nd wind speed sensor is located at 135cm from the center of the rotating device, the 3 rd wind speed sensor is located at 174.3cm from the center of the rotating device, the 4 th wind speed sensor is located at 206.2cm from the center of the rotating device, the 5 th wind speed sensor is located at 233.8cm from the center of the rotating device, and the 6 th wind speed sensor is located at 258.5cm from the center of the rotating device. The wind speed sensor connecting rod connected with the second movable supporting rod is provided with 6 wind speed sensors, the numbers of the wind speed sensors are 7-12 numbers outwards along the circle center of the rotating device, the 6 wind speed sensors are distributed in non-equidistant mode along the radial direction, the 7 th wind speed sensor is located at the position 77.9cm away from the circle center of the rotating device, the 8 th wind speed sensor is located at the position 135cm away from the circle center of the rotating device, the 9 th wind speed sensor is located at the position 174.3cm away from the circle center of the rotating device, the 10 th wind speed sensor is located at the position 206.2cm away from the circle center of the rotating device, the 11 th wind speed sensor is located at the position 233.8cm away from the circle center of the rotating device, and the 12 th wind speed sensor is located at the position 258.5cm away from the circle center of the rotating device.

In this embodiment, as shown in fig. 14 and 15, the first vertical supporting rod has a diameter of 5cm and a length of 150cm, the second vertical supporting rod has a diameter of 6cm and a length of 120cm, and the bottom end portion of the first vertical supporting rod is placed inside the second vertical supporting rod and connected by the telescopic adjusting device, and the first vertical supporting rod is slid up and down inside the second vertical supporting rod by the telescopic adjusting device, thereby achieving lifting of the vertical supporting device.

In this embodiment, the sleeve connected with the three bottom support rods through the fixing ring has a diameter of 7cm and a length of 8cm, and can slide up and down on the second vertical support rod.

In this embodiment, as shown in fig. 6-9, the balancing weight connected with the bottom of the bottom bracket and/or the vertical supporting device may be a cast iron balancing weight, a cement balancing weight, a plastic sand filling balancing weight, or a mixed pressing balancing weight, etc., as shown in fig. 6 and 8, the bottom end of the balancing weight connected with the bottom of the vertical supporting device is in a cuboid shape, the upper end is in a trapezoid shape, the contact surface end of the cuboid and the ground is hollow upwards, when the balancing weight is placed on the ground, a closed space can be formed with the ground, the central position of the trapezoid shape is recessed inwards from the upper surface of the balancing weight, two through holes are formed in the recessed surface of the balancing weight, and the long bolt passes through the through holes upwards from the cuboid hollow surface. A baffle plate is welded on the bottom end of the second vertical supporting rod, two holes are arranged on the baffle plate, the middle of each hole is rectangular, and two ends of each hole are semicircular. The through hole is located directly below the hole. The long bolt passes through the through hole and the hole on the baffle plate, the vertical supporting device is freely connected with the balancing weight, the device is firmly fixed on the ground through the balancing weight, and the wind speed measuring device is prevented from being inclined or deflected due to the influence of wind speed in the measuring process.

In this embodiment, as shown in fig. 1, the rotating device includes a fixed disc, a rotating disc, a first fixed supporting rod, a second fixed supporting rod, a first movable supporting rod, and a second movable supporting rod, where in this embodiment, the diameters of the fixed disc and the rotating disc are as follows: d (D) _Fixing ＝D _Rotating Length of first fixation struts and second fixation struts =30 cm: l (L) _Fixing ＝L _Rotating =20cm, 6cm in diameter; length of each movable support rod: l (L) _Activity =200 cm, which is 6cm in diameter.

In this embodiment, be equipped with the spirit level above the fixed disc for whether the position of observing the device is horizontal, the centre of rotatory disc and fixed disc fills up there is the gasket, and this gasket can be circular rubber pad, and its diameter is 30cm, is used for reducing the frictional force between rotatory disc and the fixed disc, reduces rotary device's wearing and tearing, improves rotary device's life. The rotary disc and the fixed disc are assembled concentrically, the long bolt penetrates through the through hole in the center of the rotary device, the rotary disc, the gasket and the fixed disc are connected through the cooperation of the long bolt and the nut, and the rotary disc can rotate around the fixed disc when the nut is loosened.

In this embodiment, one end of the first fixed supporting rod and one end of the second fixed supporting rod are welded with the rotating disc, the length of the welded ends is 10cm, the other end of the first fixed supporting rod and one end of the first movable supporting rod are in threaded connection through a threaded sleeve, the other end of the second fixed supporting rod and one end of the second movable supporting rod are in threaded connection, and the first fixed supporting rod, the second fixed supporting rod, the first movable supporting rod and the second movable supporting rod are all located on the same axis and the axis passes through the center of the rotating disc. Two bolts are welded on each movable supporting rod, matched nuts are arranged on the bolts, and when the movable supporting rods and the fixed supporting rods are connected together through threaded sleeves and are horizontally placed, the bolts form 90 degrees with the vertical plane. The first welding bolt is located at 15cm of one section of the movable supporting rod, and the second welding bolt is located at 15cm of the other end of the movable supporting rod. The bolt passes through the through hole of the connecting rod clamping device to be matched with the nut, and the connecting rod clamping device is fixed on the movable supporting rod. The wind speed sensor connecting rod passes through the two connecting rod clamping devices, is fixed on the movable supporting rod through the cooperation of bolts and nuts, and rotates along with the movable supporting rod. The fixed support rods are sequentially rotated to the common or arbitrary angles on the rotary disc through the rotation of the rotary disc, and wind speed data in the 360-degree range of the cross section of the channel can be measured through rotation.

In this embodiment, when measuring the wind speed at a multiple angle of 45 °, as shown in fig. 4, the rotating device performs positioning and locking in a bolt mode, five positioning holes are provided on the fixed disk, four positioning holes in the five positioning holes are uniformly distributed along the fixed disk, the first positioning hole has an included angle of 45 ° with the horizontal line, the counterclockwise direction is hole 1, hole 2, hole 3, hole 4 in turn, the fifth positioning hole is located at the angular bisector of hole 4 and hole 1, and the holes 3 and 4 are symmetrically distributed with respect to the vertical supporting device; the rotary disc is provided with a positioning hole which is arranged on the fixed disc: pin holes in one-to-one correspondence of holes 1, 2, 3 and 4: the holes 6, 7, 8 and 9 are symmetrically distributed relative to the first fixing support rod, and the holes 7 and 8 are symmetrically distributed relative to the second fixing support rod. After the leveling position of the level is observed, the rotating device is rotated to enable the fixed support rods to correspond to holes on the rotating disc one by one, at least one locking locating pin is inserted into the corresponding holes to locate the rotating device, and therefore accurate rotation of multiple angles of 45 degrees such as 0 degree, 45 degrees, 90 degrees, 135 degrees and the like can be achieved without measuring and determining manual angles, and working efficiency is improved. The measurement at other angles, as shown in fig. 5, uses a damping mode to lock the rotation device in position.

Further, corresponding angle marks are engraved at any angle along the circumference of the fixed disc, the angle number displayed by the angle marks is based on an included angle with a horizontal line, and when the rotating disc is rotated, the angle of the position of the wind speed sensor mounting device can be directly seen through observing the indication of the angle marks.

In this embodiment, the first movable supporting rod is connected with the first fixed supporting rod in the horizontal position direction and the connection position of the second movable supporting rod and the second fixed supporting rod is started, the wind speed sensors connected on the wind speed sensor connecting rod are respectively numbered from the inside to the outside in sequence from the small to the large, and the number of the first wind speed sensor in the connection direction of the first movable supporting rod and the first fixed supporting rod is as follows: the wind speed sensor 1 is provided with the following serial numbers in sequence: the wind speed sensor 1, the wind speed sensor 2, the wind speed sensor 3, the wind speed sensor 4, the wind speed sensor 5 and the wind speed sensor 6, wherein the number of the first wind speed sensor at the joint of the second movable supporting rod and the second fixed supporting rod is connected with the number of the wind speed sensor at the last joint direction of the second movable supporting rod and the second fixed supporting rod, namely the number of the first wind speed sensor at the joint of the second movable supporting rod and the second fixed supporting rod is as follows: the wind speed sensor 7 has the following serial numbers: the wind speed sensor 7, the wind speed sensor 8, the wind speed sensor 9, the wind speed sensor 10, the wind speed sensor 11 and the wind speed sensor 12 are numbered correspondingly to the measured wind speed data through numbering the wind speed sensor, when the rotating device rotates to a second detection angle, the wind speed sensor is numbered according to the numbering rule, and at the moment, the number of the first wind speed sensor in the connection direction of the first movable supporting rod and the first fixed supporting rod is sequentially numbered with the maximum number of the existing wind speed sensor, namely the number of the first wind speed sensor in the connection direction of the first movable supporting rod and the first fixed supporting rod is: the wind speed sensor 13 is provided with the following serial numbers: a wind speed sensor 14, a wind speed sensor 15, a wind speed sensor 16, a wind speed sensor 17, a wind speed sensor 18, and a wind speed sensor 19. The installed wind speed sensors are numbered in the same way, and wind speed data of different space positions are recorded by numbering the wind speed sensors, so that the staff can conveniently compare and analyze the data.

In this embodiment, when the wind speed sensor connecting rod is adjusted to other set detection angles, the length of the wind speed sensor connecting rod and the number of sensors thereon can be adjusted according to the actual space cross section of the detection angle. For example, when the horizontal diameter of the space cross section is larger than the vertical diameter, if the rotation device is made to measure from 0 ° up to 90 °, the second fixing strut is perpendicular to the ground, and since the rotation is made to rotate counterclockwise from the horizontal direction to a set angle during the measurement, it is necessary to reduce the length of the second movable strut and/or the wind speed sensor connecting rod while correspondingly adjusting the number of sensors. When the horizontal diameter of the space cross section is smaller than the vertical diameter, if the rotating device starts to measure from 0 degrees to 90 degrees, the second fixed support rod is vertical to the ground, and the length of the second movable support rod and/or the wind speed sensor connecting rod needs to be increased and the number of sensors is correspondingly adjusted because the second fixed support rod starts to rotate anticlockwise from the horizontal direction to a set angle during measurement.

In this embodiment, as shown in fig. 1 to 3, the wind speed sensor connecting rod connected to the first fixed strut, the second fixed strut, the first movable strut and the second movable strut may be one or more. One wind speed sensor connecting rod is connected with the first fixed supporting rod, the second fixed supporting rod, the first movable supporting rod and the second movable supporting rod simultaneously, or one or more short wind speed sensor connecting rods are connected with the first fixed supporting rod and the first movable supporting rod, and the other or more short wind speed sensor connecting rods are connected with the second fixed supporting rod and the second movable supporting rod.

Example 2:

in this embodiment, as shown in fig. 11, a first fixing strut, a second fixing strut, a third fixing strut, a fourth fixing strut, a fifth fixing strut, a sixth fixing strut, a seventh fixing strut and an eighth fixing strut are uniformly welded on a rotating disc on a rotating device according to a multiple angle of 45 ° along the circumference of the rotating disc, and are respectively connected with a first movable strut, a second movable strut, a third movable strut, a fourth movable strut, a fifth movable strut, a sixth movable strut, a seventh movable strut and an eighth movable strut, wherein the included angle between the first fixing strut and a horizontal line is 0 °.

In this embodiment, preferably, 6 wind speed sensors are sequentially installed on each wind speed sensor connecting rod. The 6 wind speed sensors are non-equidistantly distributed along the radial direction. The wind speed sensor is distributed in the following way as shown in fig. 12: the 1 st wind speed sensor on each wind speed sensor is located at 77.9cm from the center of the rotating device, the 2 nd wind speed sensor is located at 135cm from the center of the rotating device, the 3 rd wind speed sensor is located at 174.3cm from the center of the rotating device, the 4 th wind speed sensor is located at 206.2cm from the center of the rotating device, the 5 th wind speed sensor is located at 233.8cm from the center of the rotating device, and the 6 th wind speed sensor is located at 258.5cm from the center of the rotating device. The wind speed sensors on the connecting rods of each wind speed sensor are outwards arranged from the center of the circle of the rotating device and are sequentially distributed on the concentric circle of the rotating device.

In this embodiment, there is the locating hole along circumference distribution on the fixed disk, can be one or more locating hole, the locating hole is located between two adjacent dead levers, has the pinhole that corresponds with it on the rotatory disc, the fixed disk has the gasket with the middle pad of rotatory disc, and this gasket can be the rubber pad and also has the hole with rotatory disc one-to-one on this gasket simultaneously, reduces the frictional force between rotatory disc and the fixed disk, reduces wearing and tearing, improves the life of two discs. After the leveling position of the level is observed, the first fixing support rod is positioned on the right side of the vertical support rod, an included angle between the first fixing support rod and the horizontal line is 0 degrees, the locking locating pin is inserted into a corresponding hole, meanwhile, a long bolt penetrates through a through hole in the center position of the rotating disc, the gasket and the center position of the fixing disc, the rotating disc, the gasket and the fixing disc are in locking connection, the locating locking of the rotating device can be achieved, multiple rotation or repeated operation is not needed, measurement of wind speed data at multiple angles of 45 degrees such as 0 degree, 45 degrees, 90 degrees, 135 degrees and the like can be directly achieved once, and the working efficiency is improved. When wind speeds at other angles are measured, a damping mode is adopted for positioning and locking.

Example 3:

in this embodiment, the device is simplified by the fixing struts being welded directly to the fixing disk to detect wind speed at angular positions of multiples of 45 °. As shown in fig. 13, a level gauge is arranged on a fixed disc welded with the vertical supporting device, a first fixed supporting rod, a second fixed supporting rod, a third fixed supporting rod, a fourth fixed supporting rod, a fifth fixed supporting rod, a sixth fixed supporting rod, a seventh fixed supporting rod and an eighth fixed supporting rod are uniformly welded along the axial direction of the fixed disc, the level gauge is respectively in threaded connection with one ends of the first movable supporting rod, the second movable supporting rod, the third movable supporting rod, the fourth movable supporting rod, the fifth movable supporting rod, the sixth movable supporting rod, the seventh movable supporting rod and the eighth movable supporting rod, and the included angle between the first fixed supporting rod and a horizontal line is 0 degrees. The wind speed data at the multiple angle position of 45 degrees can be directly measured by observing the position of the leveling bracket of the level.

The specific embodiment further provides a use method of the channel space wind speed detection system, which comprises the following steps:

step 1: and acquiring channel space data to be detected, and setting the number n of wind speed sensors in the wind speed testing device, the length L of a wind speed sensor connecting rod and the installation position of the bottom bracket according to the channel space data.

Step 1.1: firstly, measuring the cross section area of a channel space, determining the number of required movable supporting rods according to the shape and the size of the channel space, and determining the placement position of the device.

Step 1.2: the balancing weight is placed at a preset placement position, then the vertical supporting device is inserted into the central concave part of the balancing weight, and meanwhile, the bottom ends of the three external supporting rods are stretched to one side far away from the vertical supporting rods, so that the external supporting rods, the bottom supporting rods and the vertical supporting device form a triangular bracket, the device is stably placed on the ground without being supported by other supports, and the height of the vertical supporting device is adjusted through the telescopic adjusting device according to the space position of a channel.

Step 1.3: whether the device is horizontal or not is determined by observing the pointer position of the level gauge on the fixed disc, and if the device is not in a horizontal state, the position of the external support needs to be adjusted to enable the pointer of the level gauge to point to the 0 scale mark.

Step 2: and placing the wind speed testing device at the space of the channel to be tested so as to test the wind speeds at different angle positions.

Step 2.1: after leveling the position, a long bolt passes through a through hole in the center positions of the rotary disc, the gasket and the fixed disc; the device is fastened together, then the movable supporting rod, the connecting rod clamping device, the wind speed sensor connecting rod, the sensor clamping device and the wind speed sensor are connected on the fixed supporting rod in sequence.

Step 2.2: the nut is properly unscrewed to separate the rotary disc from the gasket, the rotary disc can be freely rotated on the bolt, the wind speed sensor mounting device is adjusted to a set mounting position by rotating the rotary disc, the nut is screwed, at least one locking positioning pin is inserted into a corresponding hole on the rotary device, and positioning and locking of the rotary device are realized by the locking nut and the inserted locking positioning pin.

Step 2.3: and the wind speed sensor is connected with the data acquisition memory through a cable, and the data acquisition memory is connected with the data processing display device through a data line in a communication way.

Step 2.4: and pulling out the protective sleeve of the wind speed sensor, turning on a power supply, and detecting whether the working state of the wind speed sensor is normal.

Step 2.5: after the detection is finished, the sensor clamping device is loosened, the direction of the wind speed sensor is adjusted to be the windward direction according to the wind speed direction, the sensor clamping device is screwed up to fix the wind speed sensor, the locking positioning pin is pulled out, the nut is unscrewed, the wind speed sensor connecting rod is adjusted to be set to a first detection angle through rotating the rotating disc, the locking positioning pin is inserted into one or more holes corresponding to the rotating device, the rotating disc is fixed on the fixed disc, and then the wind speed of a channel space is detected according to the set time, collected, stored and displayed.

Step 2.6: after the detection is finished, the protective sleeve of the wind speed sensor is sleeved on the wind speed sensor, the locking locating pin is pulled out continuously, the nut is unscrewed simultaneously, the wind speed sensor connecting rod is adjusted to a set second detection angle through rotating the rotating device, the nut is screwed down, and meanwhile the locking locating pin is inserted into one or more holes corresponding to the rotating device, so that the rotating disc is fixed on the fixed disc, the protective sleeve of the wind speed sensor is taken down, and the wind speed of the channel space is detected according to set time and is collected, stored, processed and displayed.

Step 2.7: and (3) repeating the steps 2.5 to 2.6, adjusting the connecting rod of the wind speed sensor to the set next detection angle until all detection angles are detected, sleeving a protective sleeve of the wind speed sensor on the wind speed sensor, and disconnecting the power supply.

Step 2.8: the cable, the wind speed sensor, the sensor clamping device, the wind speed sensor connecting rod, the connecting rod clamping device, the movable supporting rod, the rotary disc, the gasket and the first vertical supporting rod are detached in sequence and placed together, meanwhile, the second vertical supporting rod is taken out from the balancing weight, the sleeve is slid upwards along the second vertical supporting rod until the three bottom supporting rods and the three external supporting rods are attached to the second vertical supporting device, and all devices are placed in storage.

Step 3: and processing the collected wind speed data in an average value mode, and calculating the average value of the wind speed data of the airflow field acquired by each wind speed sensor at one measurement angle position in a specified time interval, so as to determine the wind speed value of the airflow field of the wind speed sensor at the angle position, and outputting a wind speed detection numerical record table on a data processing display device after all angle wind speeds are detected.

Measurement method 1:

in the present measurement method, the method of using the channel space wind speed detection system as described in embodiment 1, including measurement of wind speed data at a multiple angle position of 45 °, the measurement method is as follows:

step 1: when wind speed data is measured from the position of 0 degrees, firstly, a nut on the rotating device is loosened appropriately, the rotating disc is separated from the gasket, the rotating disc can rotate freely on the bolt, the holes 6, 7, 8 and 9 on the rotating disc are in one-to-one correspondence with the holes 1, 2, 3 and 4 on the fixed disc by rotating the rotating disc in the anticlockwise direction, a locking positioning pin is inserted into one of the corresponding holes, and meanwhile, the nut is screwed to fix the rotating device, so that the wind speed data at the measured angle position is collected, stored and displayed.

Step 2: when the wind speed at the position of 45 degrees is measured, the locking positioning pin is pulled out, the nut is unscrewed, the rotating disc is rotated in the anticlockwise direction, the hole 9 on the rotating disc corresponds to the hole 5 on the fixed disc, only the two holes correspond to each other at the moment, one locking positioning pin is inserted into the corresponding hole, the nut is screwed at the same time, so that the rotating device is fixed, and wind speed data at the position of the measured angle is collected, stored and displayed.

Step 3: when the wind speed at the position of 90 degrees is measured, the locking positioning pin is pulled out, the nut is unscrewed, the rotating disc is rotated in the anticlockwise direction, at the moment, the holes 6, 7, 8 and 9 on the rotating disc are respectively in one-to-one correspondence with the holes 2, 3, 4 and 1 on the fixed disc, one locking positioning pin is inserted into one of the corresponding holes, and the nut is screwed down at the same time, so that the rotating device is fixed, and wind speed data at the position of the measured angle is collected, stored and displayed.

Step 4: when the wind speed at the position of 135 degrees is measured, the locking positioning pin is pulled out, the nut is unscrewed, the rotating disc is rotated in the anticlockwise direction, the hole 8 on the rotating disc corresponds to the hole 5 on the fixed disc, only the two holes correspond to each other at the moment, one locking positioning pin is inserted into the corresponding hole, and the nut is screwed at the same time, so that the rotating device is fixed, and wind speed data at the position of the measured angle is collected, stored and displayed. The wind speed at the angular position of the multiple of 45 degrees is measured, and the wind speed at the angular position of the multiple of 45 degrees can be measured quickly without manually measuring and checking the angle in operation.

Measurement method 2:

in the present measurement method, the method of using the channel space wind speed detection system as described in embodiment 2 includes measuring wind speed data at a multiple angle position of 45 °, the measurement method is as follows:

the nut on the rotating device is unscrewed appropriately to separate the rotating disc from the gasket, the rotating disc can rotate freely on the bolt, the pin hole on the rotating disc corresponds to the positioning hole on the fixed disc, the locking positioning pin is inserted into the corresponding hole, and the pin hole and the positioning hole can be one or more.

Then pass through the through-hole of rotatory disc, gasket, fixed disc central point with the stock bolt, will link together rotatory disc, gasket, fixed disc, can realize rotary device's location locking, need not carry out a lot of rotation or repetition operation, once just can directly realize the measurement to the wind speed data of 45 times angles such as 0 °, 45 °, 90 °, 135 °, etc. the improvement work efficiency.

Further to the method of use of the aisle-space wind speed detection system of embodiment 3, it is used only for measuring wind speed data at a multiple angle position of 45 °: after the equipment positions are leveled and all the equipment are connected, the protective sleeve of the wind speed sensor is taken down, and the wind speed data at the multiple angle position of 45 degrees can be directly obtained by turning on the power supply.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (8)

1. A aisle-space wind speed detection system comprising: the wind speed measuring device comprises a bottom bracket, a vertical supporting device, a rotating device, a wind speed sensor mounting device and a rotary positioning locking device, wherein the bottom bracket is connected with the vertical supporting device;

the rotating device comprises a fixed disc, a rotating disc, a first fixed supporting rod, a second fixed supporting rod, a first movable supporting rod and a second movable supporting rod, wherein a level gauge is arranged on the fixed disc, a mark for displaying the degree of an included angle with a horizontal line is carved on the circumferential edge of the fixed disc, the rotating disc and the fixed disc are assembled concentrically through a lock nut and rotate around the fixed disc, one end of the first fixed supporting rod and one end of the second fixed supporting rod are fixedly connected with the rotating disc, the other end of the first fixed supporting rod is connected with one end of the first movable supporting rod, the other end of the second fixed supporting rod is connected with one end of the second movable supporting rod, the first fixed supporting rod, the second fixed supporting rod, the first movable supporting rod and the second movable supporting rod are all positioned on the same axis, the axis passes through the circle center of the rotating disc, and the rotating disc is fixed on the fixed disc through a rotary positioning locking device when the rotating disc rotates to a set angle position;

A gasket is arranged between the rotary disc and the fixed disc;

the wind speed sensor mounting device comprises a wind speed sensor connecting rod and a sensor clamping device, and the wind speed sensor is fixed on the wind speed sensor connecting rod through the sensor clamping device;

the rotary positioning locking device consists of a pin hole, a locking positioning pin and positioning holes on a rotary disc, when the multiple angles of 45 degrees such as 0 degree, 45 degrees, 90 degrees and 135 degrees are measured, the same circumference of the fixed disc is provided with a first positioning hole, a second positioning hole, a third positioning hole, a fourth positioning hole and a fifth positioning hole, wherein the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole are uniformly or discretely distributed along the circumference of the fixed disc according to the multiple angles of 45 degrees, the included angle between the first positioning hole and a horizontal line is 45 degrees, the fifth positioning hole is positioned at the bisecting angle of any two adjacent holes of the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole, and the rotary disc is provided with four pin holes which are uniformly distributed and are in one-to-one correspondence with the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole on the fixed disc.

2. The system for detecting the wind speed in the passage space according to claim 1, wherein the bottom bracket comprises a sleeve, fixing rings, three external supporting rods, three bottom supporting rods and locking nuts, the sleeve is sleeved on the vertical supporting device, the three fixing rings are welded on the sleeve and uniformly distributed along the circumferential direction of the sleeve, one ends of the three bottom supporting rods are movably connected with the fixing rings, and the other ends of the bottom supporting rods are movably connected with one ends of the three external supporting rods respectively.

3. The aisle space wind speed detection system of claim 2, wherein the bottom bracket center section has a first weight having a central recess, and the bottom of the vertical support device is inserted into the central recess of the first weight.

4. The aisle space wind speed detection system of claim 1, wherein the vertical support means has a first vertical support bar and a second vertical support bar, the first vertical support bar and the second vertical support bar being connected by a telescoping adjustment means.

5. The channel space wind speed detection system according to claim 1, wherein the rotary positioning locking device is composed of a rotary disc, a damping material and a fixed disc, a through hole is formed in the center of the rotary disc, the damping material and the fixed disc, the damping material is located between the rotary disc and the fixed disc, a groove is formed in one surface of the fixed disc, which is close to the rotary disc, the damping material is placed in the groove, the other surface of the damping material is in contact with the rotary disc, and a long bolt penetrates through the rotary disc, the damping material and the fixed disc through hole and connects the rotary disc, the damping material and the fixed disc through nuts.

6. The aisle space wind speed detection system of claim 1, wherein the wind speed sensor connecting rod is fixed to the first fixed strut, the second fixed strut, the first movable strut, and the second movable strut of the rotating device by a connecting rod clamping device.

7. The channel space wind speed detection system according to claim 1, wherein the wind speed measurement device is connected with the data acquisition memory through a cable, the data acquisition memory is in communication connection with the data processing display device through a data line, the wind speed measurement device is used for measuring the wind speed of the airflow field of the channel space cross section, the data acquisition memory is used for acquiring and storing the wind speed sensing data of the airflow field measured by the wind speed measurement device and outputting the data to the data processing display device, and the data processing display device is used for processing the wind speed data so as to obtain the wind speed value of the airflow field meeting the standard specification.

8. A method of using the aisle space wind speed detection system of any one of claims 1-7, comprising:

step 1: acquiring channel space data to be detected, and setting the number n of wind speed sensors in the wind speed testing device, the length L of a wind speed sensor connecting rod and the installation position of a bottom bracket according to the channel space data;

Step 2: the vertical supporting device, the rotating device and the wind speed sensor mounting device are sequentially connected to the bottom bracket, the wind speed sensor is adjusted to a set mounting position and clamped, the wind speed sensor is connected with the data acquisition memory through a cable, and the data acquisition memory is in communication connection with the data processing display device through a data line;

step 3: taking down a protective sleeve of the wind speed sensor, switching on a power supply, testing whether the working state of the wind speed sensor is normal, and returning to the step 2 if the working state of the wind speed sensor is abnormal;

step 4: according to the wind speed direction, adjusting the direction of a wind speed sensor, adjusting a connecting rod of the wind speed sensor to a first detection angle, fixing a rotary disc on a fixed disc through a rotary positioning locking device, detecting the wind speed of a channel space according to a set time, collecting, storing, processing and displaying, and sleeving a protective sleeve of the wind speed sensor on the wind speed sensor after the detection is finished;

step 5: adjusting a connecting rod of the wind speed sensor to set a second detection angle, fixing the rotary disc on the fixed disc through the rotary locking device, taking down a protective sleeve of the wind speed sensor, detecting the wind speed of the channel space according to set time, and collecting, storing, processing and displaying;

Step 6: repeating the steps 3-5 until all the detection angles are detected, sleeving a protective sleeve of the wind speed sensor on the wind speed sensor, cutting off the power supply, completing wind speed detection of all the angles, and outputting a wind speed detection numerical value record table on a data processing display device.