CN216381472U

CN216381472U - Speed regulation wind cave

Info

Publication number: CN216381472U
Application number: CN202123211813.XU
Authority: CN
Inventors: 钱欢; 周宇峰; 石晓天; 王易初
Original assignee: Changshu Dingrui Intelligent Measurement And Control Co ltd
Current assignee: Changshu Dingrui Intelligent Measurement And Control Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-04-26
Anticipated expiration: 2031-12-15

Abstract

A speed regulation wind cave belongs to the technical field of wind volume monitoring. Including fan air-out section, air-out rectification section, induced air section, whirl plate rectification section, detection section and circulation section, wherein, induced air section and circulation section be the U-shaped pipe, fan air-out section, air-out rectification section, induced air section, whirl plate rectification section, detection section and circulation section be linked together along clockwise end to end in proper order and constitute for the rectangle closed loop, be provided with the multi-wing formula centrifugal fan who is used for providing the wind regime in the fan air-out section, be provided with the guide plate in the induced air section, be provided with the honeycomb panel in the whirl plate rectification section, set up detection window on the detection section. The advantages are that: the air speed grade is adjusted by adopting a differential pressure principle, and a uniform and stable flow field can be formed through the air outlet rectifying section, the air inducing section and the vortex plate rectifying section, so that the air flow quality of the detection section can be improved, and the uniformity of the air speed can be controlled; the closed-loop mode is adopted, the structure is compact, the occupied area is small, the operation is simple, and the visibility is good.

Description

Speed regulation wind cave

Technical Field

The utility model belongs to the technical field of air volume monitoring, and particularly relates to a speed-regulating wind cave.

Background

At present, the coal industry is gradually upgraded to high-end, intelligent and green transformation, the safety level of coal mine operation is improved, and the development of high quality in the coal industry is promoted, so that the development direction of coal mine safety equipment is provided. The air quantity measurement of a mine ventilation system is one of the basic contents of daily mine management, and in order to monitor the safe production condition of a mine working environment, most of the measures adopted for measuring the air quantity of a mine are electronic or mechanical wind speed instruments, and the monitoring accuracy of the wind speed instruments is closely related to the safe production of the mine. The existing domestic metering mechanism, quality inspection unit and the like mostly use special wind drift checking equipment when the production inspection and calibration of wind speed sensors or wind speed instrument products are carried out. With the rapid development and updating of wind speed measuring instruments, the monitoring work of the existing wind speed measuring instruments depends on the traditional wind measuring devices, and the requirements can not be met. The existing wind tunnel is simple in structure, the speed regulation mode is mostly adjusted by adopting a potentiometer, the generated wind field is low in stability and poor in uniformity, and the expansion of a detection project of a wind speed instrument is severely limited.

In view of the above-mentioned prior art, there is a need for an improvement of the structure of the existing wind drift, for which the applicant has made an advantageous design, and the technical solutions described below have been made in this context.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a speed-regulating wind drift which is convenient for detecting and testing a wind speed measuring instrument and has stable and uniform wind speed.

The utility model aims to achieve the purpose that the speed-regulating wind cave comprises a fan air outlet section, an air outlet rectifying section, an induced air section, a vortex plate rectifying section, a detection section and a circulation section, wherein the induced air section and the circulation section are U-shaped pipes, the fan air outlet section, the air outlet rectifying section, the induced air section, the vortex plate rectifying section, the detection section and the circulation section are sequentially communicated end to end along the clockwise direction to form a rectangular closed loop, a multi-wing centrifugal fan for providing an air source is arranged in the fan air outlet section, a guide plate is arranged in the induced air section, a honeycomb plate is arranged in the vortex plate rectifying section, and a detection window is arranged on the detection section.

In a specific embodiment of the present invention, the number of the deflectors is multiple and two groups of the deflectors are formed, and two groups of the deflectors are symmetrically arranged at two bending parts of the induced draft section.

In another specific embodiment of the present invention, the baffles are arranged at intervals from the inner side wall to the outer side wall of the bent portion of the induced draft section in a diagonal manner.

In another specific embodiment of the present invention, the number of the honeycomb plates is plural, and the honeycomb plates are arranged at intervals along the length direction of the flow straightening section of the vortex plate.

In another specific embodiment of the present invention, the detection section is a special-shaped tube, and the detection section gradually narrows from one side of the rectification section to one side of the circulation section of the vortex plate, so as to form a first narrowing section and a second narrowing section in sequence, the detection window includes a first detection window opened on the first narrowing section and a second detection window opened on the second narrowing section, and the first detection window and the second detection window are used for placing different instruments to be tested.

In another specific embodiment of the present invention, the present invention further includes a differential pressure gauge, the differential pressure gauge is disposed in the detection section 5 and connected to an external data automatic acquisition and processing system, the data automatic acquisition and processing system is further connected to the multi-wing centrifugal ventilator, the multi-wing centrifugal ventilator includes a blade disposed in the fan air outlet section 1 and a variable frequency motor driving the blade to rotate, and the data automatic acquisition and processing system adjusts the rotation speed of the variable frequency motor according to data acquired by the differential pressure gauge, so as to adjust the wind speed.

In a further specific embodiment of the present invention, the wind turbine further includes a first wind speed sensor and a second wind speed sensor, the first wind speed sensor is disposed in the wind outlet rectification section, the second wind speed sensor is disposed in the detection section, and the first wind speed sensor and the second wind speed sensor are commonly connected to an external data automatic acquisition and processing system.

In a more specific embodiment of the present invention, the apparatus further includes a temperature and humidity sensor, and the temperature and humidity sensor is disposed in the detection section and connected to the external data automatic acquisition and processing system.

In yet another specific embodiment of the present invention, the air outlet section of the fan is a circular tube, the air outlet rectification section is a special-shaped tube, and the vortex plate rectification section is a square tube.

Due to the adoption of the structure, compared with the prior art, the utility model has the beneficial effects that: the air speed grade is adjusted by adopting a differential pressure principle, and a uniform and stable flow field can be formed through the air outlet rectifying section, the air inducing section and the vortex plate rectifying section, so that the air flow quality of the detection section can be improved, and the uniformity of the air speed can be controlled; the closed-loop mode is adopted, the structure is compact, the occupied area is small, the operation is simple, and the visibility is good.

Drawings

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

In the figure: 1. a fan air outlet section; 2. an air outlet rectification section; 3. an induced draft section 31, a deflector; 4. a swirl plate rectifying section 41, a honeycomb plate; 5. a detection section 51, a first narrowing section 511, a first detection window 52, a second narrowing section 521, a second detection window; 6. and (4) a circulation section.

Detailed Description

So that the public can fully understand the technical spirit and the beneficial effects of the utility model, the applicant will describe the detailed description of the specific embodiments of the utility model in conjunction with the drawings, but the description of the embodiments is not a limitation of the technical solution, and any changes made according to the inventive concept without substantial changes should be considered as the protection scope of the utility model.

Referring to fig. 1, the present invention relates to a speed regulation wind cave, which includes a fan air outlet section 1, an air outlet rectification section 2, an induced air section 3, a vortex plate rectification section 4, a detection section 5 and a circulation section 6, wherein the fan air outlet section 1 is a circular tube, the air outlet rectification section 2 is a special-shaped tube, the vortex plate rectification section 4 is a square tube, and the induced air section 3 and the circulation section 6 are U-shaped tubes. The fan air-out section 1, the air-out rectifying section 2, the induced draft section 3, the vortex plate rectifying section 4, the detection section 5 and the circulation section 6 are sequentially communicated end to end along the clockwise direction to form a rectangular closed loop, and the annular structure is favorable for reducing the space occupied by the wind cave. The multi-wing centrifugal ventilator comprises blades arranged in the fan air outlet section 1 and a variable frequency motor driving the blades to rotate.

Further, the induced draft section 3 is provided with a plurality of guide plates 31, the number of the guide plates 31 is two groups, two groups of the guide plates 31 are symmetrically arranged at two bending parts of the induced draft section 3, and the guide plates are arranged at intervals from the inner side wall to the outer side wall of the bending part in a diagonal manner.

Further, a plurality of honeycomb plates 41 are arranged in the swirl plate rectifying section 4, and the honeycomb plates 41 are arranged at intervals along the length direction of the swirl plate rectifying section 4.

Furthermore, a detection window is arranged on the detection section 5. Specifically, the detection section 5 is a special-shaped tube and gradually narrows from the flow field plate rectifying section 4 side to the circulation section 6 side, and a first narrowing section 51 and a second narrowing section 52 are sequentially formed. The wind speed will gradually increase after the detection section 5 gradually narrows. The detection window includes a first detection window 511 opened on the first narrowing section 51 and a second detection window 521 opened on the second narrowing section 52. Different instruments to be detected are placed in different detection windows for detection according to the wind speed.

Further, this embodiment still includes differential pressure gauge, first wind speed sensor, second wind speed sensor and temperature and humidity sensor. The differential pressure gauge and the temperature and humidity sensor are arranged in the detection section 5, the first air speed sensor is arranged in the air outlet rectification section 2, and the second air speed sensor is arranged in the detection section 5. The differential pressure meter, the first wind speed sensor, the second wind speed sensor and the temperature and humidity sensor are all connected with an external data automatic acquisition and processing system. The automatic data acquisition and processing system automatically adjusts the motor rotating speed of the multi-wing centrifugal ventilator through the data change of the differential pressure gauge, so that the stability and uniformity of the wind speed of the solid line are realized. The first and second wind speed sensors are used for monitoring the wind speed in the rectifying section 2 and the detecting section 5 and displaying the wind speed through the automatic data acquisition and processing system. And the data in the detection section 5 measured by the temperature and humidity sensor is also displayed by the automatic data acquisition and processing system. In this embodiment, the differential pressure gauge, the first wind speed sensor, the second wind speed sensor, the temperature and humidity sensor and the automatic data acquisition and processing system can all adopt existing products.

The utility model adopts the differential pressure principle to adjust the wind speed grade, thereby calibrating and correcting the wind meter, being mainly used for calibrating the wind speed measuring instrument and meeting the requirements of departments of metering, quality inspection and the like for calibrating the wind speed.

Claims

1. A speed governing wind cave, its characterized in that: including fan air-out section (1), air-out rectification section (2), induced air section (3), whirl plate rectification section (4), detection section (5) and circulation section (6), wherein, induced air section (3) and circulation section (6) be the U-shaped pipe, fan air-out section (1), air-out rectification section (2), induced air section (3), whirl plate rectification section (4), detection section (5) and circulation section (6) be linked together along clockwise end to end in proper order and constitute for the rectangle closed loop, fan air-out section (1) in be provided with the multi-wing formula centrifugal fan who is used for providing the wind regime, induced air section (3) in be provided with guide plate (31), whirl plate rectification section (4) in be provided with honeycomb panel (41), detection section (5) on seted up detection window.

2. A speed governing wind drift according to claim 1, characterized in that said baffles (31) are provided in a plurality of numbers and are formed into two groups, and two groups of baffles (31) are symmetrically arranged at two bending parts of said induced draft section (3).

3. A speed governing wind drift according to claim 2, characterized in that said deflector (31) is arranged diagonally at the bend of the inducer (3) from the inner side wall to the outer side wall of the bend.

4. A speed governing wind drift according to claim 1, wherein said honeycomb panels (41) are arranged in a plurality of numbers at intervals along the length of the flow straightening section (4) of the vortex plate.

5. A speed governing wind drift according to claim 1, characterized in that said detection section (5) is a shaped pipe, and gradually narrows from the flow field plate rectifying section (4) side to the circulation section (6) side to form a first narrowing section (51) and a second narrowing section (52) in sequence, said detection window comprises a first detection window (511) opened on the first narrowing section (51) and a second detection window (521) opened on the second narrowing section (52), said first detection window (511) and said second detection window (521) are used for placing different instruments to be tested.

6. The speed regulation wind drift as claimed in claim 1, further comprising a differential pressure gauge, wherein the differential pressure gauge is arranged in the detection section (5) and connected with an external automatic data acquisition and processing system, the automatic data acquisition and processing system is further connected with the multi-wing centrifugal ventilator, the multi-wing centrifugal ventilator comprises a blade arranged in the fan air outlet section (1) and a variable frequency motor for driving the blade to rotate, and the automatic data acquisition and processing system adjusts the rotating speed of the variable frequency motor according to data acquired by the differential pressure gauge so as to adjust the wind speed.

7. The speed governing wind drift according to claim 6, further comprising a first wind speed sensor and a second wind speed sensor, wherein the first wind speed sensor is arranged in the wind outlet rectifying section (2), the second wind speed sensor is arranged in the detection section (5), and the first wind speed sensor and the second wind speed sensor are connected to an external data automatic acquisition and processing system together.

8. The speed governing wind drift according to claim 7, characterized in that further comprises a temperature and humidity sensor, wherein the temperature and humidity sensor is arranged in the detection section (5) and is connected with an external data automatic acquisition and processing system.

9. The speed governing wind drift according to claim 1, wherein said fan outlet (1) is a circular tube, said outlet flow-straightening segment (2) is a special-shaped tube, and said vortex plate flow-straightening segment (4) is a square tube.