CN217582555U

CN217582555U - Small wind tunnel high-precision testing device

Info

Publication number: CN217582555U
Application number: CN202221413743.8U
Authority: CN
Inventors: 葛磊; 杨彬; 朱海平; 孙辉
Original assignee: Hefei Shunze Energy Environmental Technology Co ltd
Current assignee: Hefei Shunze Energy Environmental Technology Co ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-10-14
Anticipated expiration: 2032-06-07

Abstract

The utility model relates to a fan amount of wind test technical field, especially, little wind-tunnel high accuracy testing arrangement, including wind-tunnel air intake flange, pressure taking point, wind-tunnel storehouse board, flow equalizing net I, flow equalizing net II, flow equalizing net III, the nozzle mounting panel, the cylinder, pitot tube pressure taking point, wind-tunnel air outlet flange, soft joint, fan box body air intake flange, the draught fan, the blast gate and fan box body storehouse board, wind-tunnel storehouse board upper and lower, on the left and right sides position symmetry be provided with pressure taking point and pitot pressure taking point, pressure taking point utilizes the trachea connection respectively, the nozzle sets up through different combination forms, and the nozzle passes through the buckle to be installed in nozzle mounting panel department; the utility model discloses in, through the nozzle that sets up, parts such as pressure point, draught fan, blast gate have avoided old scheme measurement accuracy low, the wind pressure control range is little, can not realize different grade type fan amount of wind test, have realized high accuracy test, wind pressure control range wide, induced draft, the type of blowing fan all measurable quantity amount of wind.

Description

High-precision testing device for small wind tunnel

Technical Field

The utility model relates to a fan amount of wind test technical field specifically is little wind-tunnel high accuracy testing arrangement.

Background

The wind tunnel testing device is used for testing the performance of the fan, and comprises the measurement of various parameters such as air quantity, air pressure, power, efficiency and the like. The wind tunnel testing device adopts a plurality of nozzles to measure the flow, consists of an air chamber, a flow stabilizing device, a nozzle, a variable exhaust system and the like, and can be used as a detection device of a fan and important test equipment for design and development.

The wind tunnel testing device is used as a testing device of a fan and important testing equipment for design and development, the fan is divided into an axial flow fan and a centrifugal fan, and has two forms of blowing and air suction, the performance difference of the fans of different types is large, the fans with large air quantity and small air pressure are difficult to accurately measure, the testing methods of the air suction fan and the air blowing fan are different, and the air pressure adjusting range is small;

therefore, a small wind tunnel high-precision testing device is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a little wind-tunnel high accuracy testing arrangement to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the small wind tunnel high-precision testing device comprises a wind tunnel air inlet flange, a pressure taking point, a wind tunnel storehouse plate, a first flow equalizing net, a second flow equalizing net, a third flow equalizing net, a nozzle mounting plate, a cylinder, a pitot tube pressure taking point, a wind tunnel air outlet flange, a soft joint, a fan box air inlet flange, an induced draft fan, an air valve and a fan box storehouse plate, wherein the pressure taking point and the pitot tube pressure taking point are symmetrically arranged on the upper side, the lower side and the left side and the right side of the wind tunnel storehouse plate and are connected through air pipes respectively, the wind tunnel air inlet flange, the wind tunnel air outlet flange and the fan box air inlet flange are fixed on the wind tunnel storehouse plate and the fan box storehouse plate in a riveting mode, the nozzle is arranged in different combination modes, the nozzle is installed on the nozzle mounting plate through a buckle, the nozzle mounting plate is fixed on the surface of the nozzle mounting plate in a riveting mode, the first flow equalizing net, the second flow equalizing net and the third flow equalizing net are installed on the front end of the nozzle and the rear end of the cylinder respectively, the air valve is fixed on the surface of the fan box storehouse plate in a riveting mode, the induced draft fan box storehouse plate is located behind the nozzle.

Preferably, the first flow equalizing net, the second flow equalizing net and the third flow equalizing net all adopt different opening rates, the front section and the rear end of the wind tunnel reservoir plate are provided with mounting positions of the first flow equalizing net, the second flow equalizing net and the third flow equalizing net, and the mounting positions are mounted in a rivet pulling mode.

Preferably, the wind tunnel storeroom plate and the fan box storeroom plate are connected through soft connection, and the soft connection is installed at a wind tunnel air outlet flange and a fan box air inlet flange in a bolt fixing mode.

Preferably, the nozzles are different in size, and the nozzle mounting plate is provided with a nozzle mounting position.

Preferably, the pressure taking point is arranged at the front section of the wind tunnel storeroom plate, and the pitot tube pressure taking point is arranged at the rear section of the wind tunnel storeroom plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, through the nozzle that sets up, the net flows equally, components such as cylinder, can test the amount of wind through the nozzle combination of different forms, the nozzle adopts symmetrical arrangement, use the cylinder to realize the different combination forms of nozzle, the net one that flows equally, the net two that flows equally, the net three that flows equally adopts 60%, 50%, 45% percent aperture ratio respectively, arrange in proper order according to the air current direction, can effectual improvement air current's homogeneity, ensure that the air current of measuring the plane is even, adopt the cylinder to realize that the nozzle combination of different forms can not only high accurate test the amount of wind, and is with low costs, easily control;

2. the utility model discloses in, draught fan through setting up, the blast gate, soft connecing, get the pressure point, components such as business turn over wind flange, draught fan rotational speed through setting up, the operating mode point that the blast gate aperture is used for controlling the fan, single draught fan is difficult to satisfy fan operating mode point, the draught fan uses more can accurate control wind pressure with the blast gate cooperation, realize the amount of wind under the different wind pressures and measure, through dismantling soft connecing, but on the anterior segment or the back end of portable fan box to wind-tunnel, will soft connecing with the bolt and be connected to on wind-tunnel and the fan box flange, select to get pressure point or pitot tube and get the pressure point, thereby realize the capability test to air blower or air suction fan, can not only satisfy the fan capability test of different grade type, and make whole device more high-efficient, the commonality is stronger.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

in the figure: 1. a wind tunnel air inlet flange; 2. taking a pressure point; 3. a wind tunnel reservoir plate; 4. a first flow equalizing network; 5. a second flow equalizing network; 6. a third flow equalizing net; 8. a nozzle; 9. a nozzle mounting plate; 10. a cylinder; 11. a pitot tube pressure tapping point; 12. a wind tunnel outlet flange; 13. soft connection; 14. an air inlet flange of the fan box body; 15. an induced draft fan; 16. an air valve; 17. fan box storehouse board.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution:

a small wind tunnel high-precision testing device comprises a wind tunnel air inlet flange 1, a pressure taking point 2, a wind tunnel warehouse board 3, a flow equalizing net I4, a flow equalizing net II 5, a flow equalizing net III 6, a nozzle 8, a nozzle mounting board 9, an air cylinder 10, a pitot tube pressure taking point 11, a wind tunnel air outlet flange 12, a soft joint 13, a fan box body air inlet flange 14, an induced draft fan 15, an air valve 16 and a fan box body warehouse board 17, wherein the pressure taking point 2 and the pitot tube pressure taking point 11 are symmetrically arranged at the upper side, the lower side, the left side and the right side of the wind tunnel warehouse board 3, the pressure taking point 2 and the pitot tube pressure taking point 11 are respectively connected by an air pipe, and the pressure taking points at different positions can be respectively used for measuring a blowing fan and an induced draft fan, wind-tunnel air intake flange 1, wind-tunnel air outlet flange 12, fan box air inlet flange 14 adopts the rivet mode to be fixed in wind-tunnel storehouse board 3 and fan box storehouse board 17 department, fix the flange through the rivet mode, break off the fixed department and leak out, nozzle 8 sets up through different combination forms, and nozzle 8 passes through the buckle and installs in nozzle mounting panel 9, this kind of setting makes the amount of wind measure more accurate through the combination of nozzle 8 of different forms, nozzle mounting panel 9 is fixed in wind-tunnel storehouse board 3 surface through the rivet mode, flow equalization net one 4, flow equalization net two 5, flow equalization net three 6 is installed respectively in nozzle 8 anterior segment and cylinder 10 rear end, blast gate 16 is fixed in fan box storehouse board 17 surface through the rivet mode, cylinder 10 is located behind nozzle 8, draught fan 15 adopts the rivet to be fixed in fan box storehouse board 17.

The first flow equalizing net 4, the second flow equalizing net 5 and the third flow equalizing net 6 are all in different opening rates, the first flow equalizing net 4, the second flow equalizing net 5 and the third flow equalizing net 6 are arranged at the front section and the rear end of the wind tunnel storeroom plate 3 and are all installed in a rivet pulling mode, the arrangement enables airflow of a measuring plane in front of the nozzle 8 to be uniform through the different opening rates of the first flow equalizing net 4, the second flow equalizing net 5 and the third flow equalizing net 6, the wind tunnel storeroom plate 3 and the fan box storeroom plate 17 are connected through a soft joint 13, the soft joint 13 is fixedly installed at the wind tunnel air outlet flange 12 and the fan box air inlet flange 14 through bolts, and corresponding switching adjustment is carried out according to different types of fans, demolish soft 13 and remove the fan box to the anterior segment or the rear end of wind-tunnel and adopt bolted connection once more, carry out performance test to the fan form of no type, can improve the suitability of whole equipment effectively, nozzle 8 adopts the nozzle of equidimension not, use cylinder 10 to carry out the 8 combinations of nozzle of different grade type, nozzle mounting panel 9 department is provided with nozzle 8 mounted position, nozzle 8 adopts symmetrical arrangement, this technique is when making whole device have the structure of accurate control, through in time controlling cylinder 10, can make whole device measurement more accurate, pressure taking point 2 sets up at wind-tunnel storehouse board 3 anterior segment, pitot tube pressure taking point 11 sets up at wind-tunnel storehouse board 3 back end.

The working process is as follows: when performance parameters of an air blowing fan need to be tested, the fan is installed at a flange 1 of an air inlet of an air tunnel, a fan box body storehouse plate 17 is connected to the rear end of a wind tunnel storehouse plate 3 through a soft joint 13, an air cylinder 10 is opened, a nozzle 8 is opened, an induced draft fan 15 and an air valve 16 are opened, a pressure difference between the front end and the rear end of the nozzle 8 and a static pressure of the fan are collected through a pressure taking point 2, air flow from the fan flows to the nozzle 8 through a flow equalizing net I4, a flow equalizing net II 5 and a flow equalizing net III 6, the air flow enters the fan box body through the soft joint 13 and then is discharged through the air valve 16, working condition points of the fan are controlled through the induced draft fan 15 and the air valve 16, the air cylinder 10 is opened, the nozzle 8 is opened, the induced draft fan 15 and the air valve 16 are opened, the pressure difference between the front end and the rear end of the wind tunnel plate 3 is collected through the soft joint 13 when performance parameters of the air suction fan need to be tested, the air flow equalizing fan is opened, the air cylinder 10 is opened, the nozzle 8 is controlled by the air flow equalizing net II, the induced draft fan 15 and the air valve 16, the flow equalizing net II is controlled by the flow equalizing net II, the flow of the flow equalizing fan 8 and the flow of the flow equalizing fan under different working conditions.

The foregoing is illustrative and explanatory of the structure of the invention, and it is intended that those skilled in the art who have the structure described herein be able to make various modifications, additions or substitutions thereto, without departing from the scope of the invention as defined in the claims.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended to aid in the description of the invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best understand the invention and its practical application. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Little wind-tunnel high accuracy testing arrangement, including wind-tunnel air intake flange (1), pressure taking point (2), wind-tunnel storehouse board (3), net (4) flow equalize, net two (5) flow equalize, net three (6), nozzle (8), nozzle mounting panel (9), cylinder (10), pitot tube pressure taking point (11), wind-tunnel air outlet flange (12), soft (13), fan box body air inlet flange (14), draught fan (15), blast gate (16) and fan box storehouse board (17), its characterized in that: the wind tunnel warehouse board is characterized in that pressure taking points (2) and pitot tube pressure taking points (11) are symmetrically arranged on the positions of the upper side, the lower side and the left side of the wind tunnel warehouse board (3), the pressure taking points (2) and the pitot tube pressure taking points (11) are respectively connected with air pipes, a wind tunnel air inlet flange (1), a wind tunnel air outlet flange (12) and a fan box air inlet flange (14) are fixed on the surfaces of the wind tunnel warehouse board (3) and the fan box warehouse board (17) in a riveting mode, nozzles (8) are arranged in different combination modes, the nozzles (8) are mounted on the positions of the nozzle mounting boards (9) through buckles, the nozzle mounting boards (9) are fixed on the surfaces of the wind tunnel warehouse board (3) in a riveting mode, a flow equalizing net I (4), a flow equalizing net II (5) and a flow equalizing net III (6) are respectively mounted at the front section of the nozzle (8) and the rear end of the air cylinder (10), an air valve (16) is fixed on the surfaces of the fan box warehouse board (17) in a riveting mode, and the air cylinder (10) is located behind the nozzle (8), and an induced draft fan (15) is fixed on the fan warehouse board (17) in a riveting mode.

2. The small wind tunnel high-precision testing device according to claim 1, characterized in that: the wind tunnel reservoir plate is characterized in that the first flow equalizing net (4), the second flow equalizing net (5) and the third flow equalizing net (6) are different in opening rate, the first flow equalizing net (4), the second flow equalizing net (5) and the third flow equalizing net (6) are arranged at the front section and the rear end of the wind tunnel reservoir plate (3), and the first flow equalizing net (4), the second flow equalizing net (5) and the third flow equalizing net (6) are arranged at positions and are mounted in a rivet pulling mode.

3. The small wind tunnel high precision testing device according to claim 1, characterized in that: the wind tunnel storehouse plate (3) and the fan box body storehouse plate (17) are connected through a soft joint (13), and the soft joint (13) is installed at a wind tunnel air outlet flange (12) and a fan box body air inlet flange (14) in a bolt fixing mode.

4. The small wind tunnel high-precision testing device according to claim 1, characterized in that: the spray nozzles (8) are different in size, and the spray nozzle mounting plate (9) is provided with the mounting positions of the spray nozzles (8).

5. The small wind tunnel high-precision testing device according to claim 1, characterized in that: the pressure taking point (2) is arranged at the front section of the wind tunnel reservoir plate (3), and the pitot tube pressure taking point (11) is arranged at the rear section of the wind tunnel reservoir plate (3).