CN211667965U - Plug-in type static pressure box air supply device for top uniform air supply test - Google Patents
Plug-in type static pressure box air supply device for top uniform air supply test Download PDFInfo
- Publication number
- CN211667965U CN211667965U CN201922132870.5U CN201922132870U CN211667965U CN 211667965 U CN211667965 U CN 211667965U CN 201922132870 U CN201922132870 U CN 201922132870U CN 211667965 U CN211667965 U CN 211667965U
- Authority
- CN
- China
- Prior art keywords
- air supply
- static pressure
- pressure box
- box
- blast pipe
- 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.)
- Active
Links
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model belongs to the technical field of the ventilation, concretely relates to a bayonet static pressure case air supply arrangement for top even air supply is experimental. The device comprises a static pressure box and an inserted blast pipe, wherein the bottom and the side surface of the static pressure box are respectively provided with a uniform blast opening and a blast pipe interface; one side of the plug-in blast pipe is connected with a centrifugal variable frequency fan, the other side of the plug-in blast pipe is provided with an upward blast pipe air port, and the length of the plug-in pipeline can be adjusted according to requirements; and the air opening of the air supply pipe is provided with a slidable baffle and a clamping groove, and the size of the air opening can be adjusted. The device of the utility model is simple in operation, it is convenient to adjust. The combination of the distance between the inner part of the static pressure box and the size of the air opening of the air supply pipe enables the flow field and the temperature field in the static pressure box to be stable and uniform, and therefore the requirement of uniform air supply in a top uniform air supply model test is met.
Description
Technical Field
The utility model belongs to the technical field of the ventilation, concretely relates to bayonet static pressure case air supply arrangement for among top even air supply model test.
Background
When the high and large space building adopts ceiling air supply, the air supply quantity and the air supply temperature of each air port of the ceiling are required to be kept consistent, and even air supply is realized. When a scaling model test of ventilation effect is carried out on a building with a large space, when the specific size value is smaller (for example, the ratio is 1:20 or even smaller), the air quantity balance of each air port is difficult to realize by directly adopting a pipeline opening air supply mode, and the uniform air supply effect is difficult to achieve. The static pressure box type air supply is an effective method, but although the static pressure box (an air supply opening is formed in the side wall) commonly used in a model test can achieve the basically uniform air speed, the uniform temperature effect of an air outlet is difficult to ensure, and the main reason is that the air fed from the inlet of the static pressure box cannot be fully mixed in the box body due to the disordered airflow structure in the static pressure box. Therefore, the plenum box air supply device needs to be modified. An effective way is to transform the traditional inlet air supply into plug-in pipeline air supply, namely, air flow is sent into the static pressure box through an air supply pipeline inserted into the static pressure box, and the external air flow is directly sent into the static pressure box through an outlet arranged on the air supply pipeline, so that the internal air flow is more easily fully mixed, and the uniformity of air flow parameters (air quantity and temperature) of an air outlet is ensured.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a simple structure, convenient to use, satisfy bayonet static pressure case air supply arrangement in the top even air supply model test of experimental demand to the defect that current static pressure case technique exists with not enough.
In order to achieve the above purpose, the utility model adopts the following technical scheme: comprises a static pressure box (1) and an inserted blast pipe (2); the static pressure box is a box body with a cuboid structure, the bottom of the static pressure box is provided with a plurality of uniformly distributed air supply outlets (6), and one side surface of the static pressure box is provided with an air supply pipe interface (8); the plug-in blast pipe is a pipe with a rectangular section, one end of the plug-in blast pipe is sealed and extends into the static pressure box (1) from a blast pipe interface (8), and the other end of the plug-in blast pipe is positioned outside the static pressure box (1) and is connected with a centrifugal variable frequency fan (9); an opening-adjustable air port (3) for supplying air upwards is arranged on the upper side surface of the inserted air supply pipe inserted into the static pressure box (1); a plurality of struts (7) are arranged inside the static pressure box, one ends of the struts (7) are fixed to the bottom of the static pressure box (1), and the other ends of the struts are connected with the plug-in blast pipe (2) and used for supporting and fixing the plug-in blast pipe (2); the bottom of the static pressure box (1) is supported and fixed by four brackets (10).
And a sealing device (15) such as sealant and the like is adopted to seal between the static pressure box (1) and the plug-in blast pipe (2) at the blast pipe interface (8).
Opening adjustable wind gap (3) are for opening at the last side of bayonet blast pipe has the slot, and draw-in groove (4) are equipped with to the three medial surface of slot, are equipped with slidable baffle (5) in the draw-in groove, and slidable baffle (5) can freely slide on the slot to adjustable opening size.
A thermocouple (11) and a wind speed acquisition instrument (12) are arranged at the air supply outlet (6), and the thermocouple (11) is connected with temperature data acquisition equipment (14); the wind speed acquisition instrument (12) is connected with the wind speed data acquisition equipment (13).
The length of the inserted blast pipe (2) inserted into the static pressure box (1) can be adjusted according to requirements.
The distance between the upper edge of the air supply pipe connector (8) and the top of the static pressure box is 1/5-1/4 of the height of the static pressure box; when the distance between the inserted blast pipe and the inside of the static pressure box is 1/2-3/4 of the length of the static pressure box (the length direction of the static pressure box is consistent with the insertion direction of the inserted blast pipe), the uniform air supply effect is good.
The air inlets of the plug-in air supply pipes are arranged at equal intervals, and the distance between every two adjacent air inlets is 3 times of the length of the air inlets.
The clamping groove is arranged on the boundary of the air opening of the air supply pipe and is used for placing the slidable baffle; the slidable baffle is slidable in the longitudinal direction of the insertion blower tube.
The upper and lower width of draw-in groove is 1.2 times of slidable baffle thickness.
The side length of the slidable baffle is 1.2 times of that of the tuyere.
Compared with the prior art, the utility model discloses following technical advantage has: the distance between the air supply pipe and the static pressure box can be adjusted to adjust the airflow organization in the static pressure box, and furthermore, the position of a slidable baffle plate on the plug-in air supply pipe can be adjusted to control the air flow rate fed into each air supply pipe air opening. The device is simple and convenient to adjust, and the flow field in the static pressure box can reach a stable and uniform state through the combination of the distance between the inner part of the static pressure box and the size of the air opening of the air supply pipe, so that the requirement of uniform air supply in a physical model test is met.
Drawings
FIG. 1 is a schematic view of the overall structure of the device;
FIG. 2 is a schematic view of a static pressure box;
FIG. 3 is a schematic view of an insert blower tube configuration;
FIG. 4 is a schematic view of the tuyere structure of the blast tube;
FIG. 5 is a schematic view of a conditioning and measurement system;
wherein: 1, a static pressure box; 2, inserting an air supply pipe; 3, a tuyere; 4, a clamping groove; 5 a slidable baffle; 6, an air supply outlet; 7 a support post; 8, connecting an air supply pipe; 9 centrifugal frequency conversion fan; 10, a bracket; 11 a thermocouple; 12 wind speed acquisition instruments; 13 wind speed data acquisition equipment; 14 temperature data acquisition equipment; 15 sealing the device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to the attached figures 1-5, the utility model comprises a static pressure box 1 and a plug-in blast pipe 2, wherein the bottom and the side surface of the static pressure box 1 are provided with a uniform air supply outlet 6 and a blast pipe connector 8; one side of the inserted blast pipe 2 is connected with a centrifugal variable frequency fan 9, the other side of the inserted blast pipe 2 is provided with an upward blast pipe air port 3, and the length of the inserted pipeline can be adjusted according to requirements; the plug-in blast pipe 2 is connected with the static pressure box 1 through a blast pipe connector 8, and a sealing device 15 is arranged at the connection part; the distance between the upper edge of the air supply pipe connector 8 and the top of the static pressure box is 1/4 of the height of the static pressure box 1; air outlets 3 of the air supply pipes on the inserted air supply pipes 2 are arranged at equal intervals, and the distance between every two adjacent air outlets is 3 times of the length of each air outlet; a slidable baffle 5 and a clamping groove 4 which can adjust the size of the air opening are arranged on the air opening 3 of the air supply pipe; a clamping groove 4 arranged on the boundary of the air opening 3 of the air supply pipe is used for placing a slidable baffle 5; the slidable baffle 5 can slide along the longitudinal direction of the inserted blast pipe 2; the width of the clamping groove 4 is 1.2 times of the thickness of the slidable baffle 5; the side length of the slidable baffle 5 is 1.2 times of that of the air inlet 3 of the blast pipe.
Example 1
According to the attached figures 1-5, firstly the static pressure box 1 and the plug-in blast pipe 2 are assembled, the slidable baffle 5 on the tuyere 3 of the blast pipe is in the fully open state, and the plug-in blast pipe 2 is inserted into the static pressure box for 1/2 the length of the static pressure box. A thermocouple 11 is arranged at each uniform air supply outlet 6 at the bottom of the static pressure box 1 to measure air supply temperature, and the height of a probe of the thermocouple 11 is 2cm from the bottom of the static pressure box 1; a wind speed acquisition instrument 12 is arranged at a distance of 1cm from the wind port in the wind supply direction of each uniform wind supply port 6 to measure the wind speed; the thermocouple 11 is connected with a temperature acquisition device 14, and the wind speed acquisition instrument 12 is connected with a wind speed acquisition device 13.
And (3) starting the centrifugal variable frequency fan 9, stabilizing for 10min, observing the wind speed of each wind port on the wind speed acquisition equipment 13, and adjusting the frequency of the fan to obtain the numerical value required by the experiment. And observing the air supply temperature of each air port on the temperature acquisition equipment 14, and finally achieving the effect of uniform air supply temperature of each air port by adjusting the distance of the insertion type air supply pipe 2 inserted into the static pressure box 1 and the position of the slidable baffle 5 at the air port 3 of the air supply pipe. Through tests, the distance of the insertion type blast pipe 2 inserted into the static pressure box 1 is 1/2-3/4 of the length of the static pressure box, and when the slidable baffle 5 is fully opened, the uniform air supply effect is good.
Claims (8)
1. An inserted static pressure box air supply device for a top uniform air supply test is characterized by comprising a static pressure box (1) and an inserted air supply pipe (2); the static pressure box is a box body with a cuboid structure, the bottom of the static pressure box is provided with a plurality of uniformly distributed air supply outlets (6), and one side surface of the static pressure box is provided with an air supply pipe interface (8); the plug-in blast pipe is a pipe with a rectangular section, one end of the plug-in blast pipe is sealed and extends into the static pressure box (1) from a blast pipe interface (8), and the other end of the plug-in blast pipe is positioned outside the static pressure box (1) and is connected with a centrifugal variable frequency fan (9); an opening-adjustable air port (3) for supplying air upwards is arranged on the upper side surface of the inserted air supply pipe inserted into the static pressure box (1); a plurality of struts (7) are arranged inside the static pressure box, one ends of the struts (7) are fixed to the bottom of the static pressure box (1), and the other ends of the struts are connected with the plug-in blast pipe (2) and used for supporting and fixing the plug-in blast pipe (2); the bottom of the static pressure box (1) is supported and fixed by four brackets (10).
2. An inserted plenum box blower for top plenum testing according to claim 1, wherein the plenum box (1) and the inserted blower tube (2) are sealed at the blower tube interface (8) by a sealing means (15).
3. An inserted static pressure box air supply device for a top uniform air supply test according to claim 1, characterized in that the opening-adjustable air port (3) is a rectangular hole formed on the upper side surface of the inserted air supply pipe, the three inner side surfaces of the rectangular hole are provided with clamping grooves (4), a slidable baffle plate (5) is arranged in the clamping grooves, and the slidable baffle plate (5) can freely slide on the rectangular hole, so that the opening size can be adjusted.
4. An inserted plenum box air supply device for a top uniform air supply test according to claim 1, characterized in that a thermocouple (11) and an air speed acquisition instrument (12) are arranged at the air supply outlet (6), and the thermocouple (11) is connected with a temperature data acquisition device (14); the wind speed acquisition instrument (12) is connected with the wind speed data acquisition equipment (13).
5. An inserted plenum box air supply device for top uniform air supply tests as claimed in claim 1 wherein the distance from the upper edge of said supply duct interface (8) to the top of the plenum box is from 1/5 to 1/4 of the plenum box height; the distance between the insertion type blast pipe and the interior of the static pressure box is 1/2-3/4 of the length of the static pressure box, and the length direction of the static pressure box is consistent with the insertion direction of the insertion type blast pipe.
6. The inserted plenum box air supply device for the top uniform air supply test is characterized in that air ports on the inserted air supply pipe are arranged at equal intervals, and the distance between the adjacent air ports is 3 times of the length of the air ports.
7. The inserted plenum box blower apparatus for top plenum testing as set forth in claim 3, wherein said slot has an upper and lower width of 1.2 times the thickness of the slidable baffle.
8. An inserted plenum box blower for top plenum testing as set forth in claim 3 wherein said slidable baffle has a side length 1.2 times the side length of the tuyere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132870.5U CN211667965U (en) | 2019-12-02 | 2019-12-02 | Plug-in type static pressure box air supply device for top uniform air supply test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132870.5U CN211667965U (en) | 2019-12-02 | 2019-12-02 | Plug-in type static pressure box air supply device for top uniform air supply test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211667965U true CN211667965U (en) | 2020-10-13 |
Family
ID=72733095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922132870.5U Active CN211667965U (en) | 2019-12-02 | 2019-12-02 | Plug-in type static pressure box air supply device for top uniform air supply test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211667965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923421A (en) * | 2021-04-19 | 2021-06-08 | 安徽绿洁通风设备制造有限公司 | Four-in-one preassembled bin type oil fume purification and ventilation equipment |
-
2019
- 2019-12-02 CN CN201922132870.5U patent/CN211667965U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923421A (en) * | 2021-04-19 | 2021-06-08 | 安徽绿洁通风设备制造有限公司 | Four-in-one preassembled bin type oil fume purification and ventilation equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102519703B (en) | Air terminal air volume balance detection analog device and analog detecting method thereof | |
| CN106370388B (en) | Car radiation Performance Test System and method | |
| CN211667965U (en) | Plug-in type static pressure box air supply device for top uniform air supply test | |
| CN103512109A (en) | Measuring device of air flow rate for air conditioning system | |
| US6439061B1 (en) | Airflow measuring assembly for air handling systems | |
| CN203797893U (en) | Constant-temperature room pipeline system | |
| CN210400470U (en) | Air outlet flowmeter | |
| CN211452767U (en) | Automobile air outlet leakage measuring device | |
| CN103245019A (en) | Improved aging room | |
| CN209471146U (en) | A kind of novel fast sample chamber suitable for system of Scanning Tunneling Microscope | |
| CN207557222U (en) | A kind of flammable calibrating installation with toxic and harmful gas alarm | |
| CN209241360U (en) | A kind of Multi probe water-cooled test framed bent | |
| CN209727176U (en) | A kind of cold conditions accurately measures L-type standard pitot tube | |
| CN107240538B (en) | Variable diameter positioning and cooling device for magnetron | |
| CN111111797A (en) | Constant temperature water cooling plant of embedded annular water-cooled tube | |
| CN208091501U (en) | A kind of wind quantity test device | |
| CN220893660U (en) | Test device capable of accurately providing high wind pressure and measuring wind quantity | |
| US6543932B1 (en) | Enthalpy tunnel | |
| CN210401453U (en) | Air outlet blowing angle tester | |
| CN206560967U (en) | A kind of gluing dryer | |
| CN219178639U (en) | Variable wind volume measurer | |
| CN209925270U (en) | Fan step-down capability test equipment | |
| CN217300988U (en) | Energy-saving accelerated aging test bench for fan | |
| CN110136772A (en) | A kind of low pressure heat test large scale structure inside active cooling device | |
| CN101865518B (en) | Air supply pipe of dehumidifier for cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |