CN204008061U - The test unit of a kind of funneling unit cylindrical shell to plant physiology ecology - Google Patents

Abstract

The utility model discloses a test device for plant physiology and ecology with a funnel-type unit cylinder, which is characterized in that a funnel-type sand supply device is placed above the unit cylinder, the funnel-type sand supply device is a cube, and the inside of the cube is a tapered funnel. The bottom of the funnel is provided with a sand drain. There is a sand leak plate on the sand leak tank, and a sand leak hole is arranged on the sand leak plate, and a circular hole slot is arranged at the bottom of the unit cylinder, and the center of the circular hole slot is located at the center of the unit cylinder. Pour the dried and sieved fine sand into the funnel-type sand supply device equipped with a sand leak board, and the sand will automatically flow into the unit cylinder along the sand leak holes on the sand leak board. When the sand particles are blown to the place where the experimental plants are placed, a wind-sand flow environment that simulates natural conditions is formed in the wind tunnel, thus realizing the experiment of artificially simulating the influence of the wind-sand flow on the soil surface covering plants in a natural wind-sand environment.

Description

A test device for funnel-type unit cylinder on plant physiology and ecology

technical field

The utility model relates to a test device for plant physiology and ecology by a funnel-type unit cylinder.

Background technique

Existing portable wind tunnels in the field can only use the sand particles accumulated in the wind tunnel to carry out net wind and wind blowing tests, which cannot simulate the blowing and erosion of wind and sand flows of different intensities in nature on the surface covering plants. At present, there are few reports on the impact of wind and sand flow on plant physiology and ecology and its response mechanism as a single stress controllable factor. The reason is that the study of the impact of wind and sand flow on plants requires a special measuring instrument - the sand wind tunnel. In the past, the sand wind tunnel was mostly used for indoor sandstorm physics research. Under the action of wind and sand flow, how the physiological ecology of wild plants will change is an important topic for scientific and technological personnel to carry out research.

Contents of the invention

Based on the above reasons, the purpose of this utility model is to provide a test device for plant physiological ecology with a funnel-type unit cylinder. The device is equipped with a detachable funnel-type sand supply device on the unit cylinder to provide a stable and reliable sand source to the unit cylinder during the wind blowing test, which can simulate the impact of wind and sand flow on plants at different intensities and different wind blowing times in nature. Plants respond to it.

The purpose of this utility model is achieved in that:

A test device for funnel-type unit cylinder on plant physiology and ecology. body (collectively referred to as the unit cylinder) and the wind speed measuring device. The timer includes a fuse box, an AC contactor, a digital display time relay, a No. 1 push button switch, a No. 2 push button switch, a No. 1 unit barrel, a No. 2 unit barrel, and a No. 3 unit barrel. Use rivets to rivet the white iron sheet on the edge of the frame, seal the connection between the No. 1 unit cylinder body, No. 2 unit cylinder body, and No. 3 unit cylinder body with sealing strips, and fasten them with bolts; The bell mouth is connected with the axial flow fan, the axial flow fan is connected with the frequency converter; the generator is connected with the air switch device, the air switch device is connected with the fuse box, the fuse box is connected with the No. 1 button switch, and the No. 1 button switch is connected with the No. Ⅱ button switch connection, No. Ⅱ button switch is connected with the AC contactor and digital display time relay respectively, the digital display time relay is connected with the AC contactor, the AC contactor is connected with the circuit breaker, the AC contactor is connected with the frequency converter; The measuring device is equipped with an inclined pressure gauge and an S-shaped pitot tube; and an observation window is provided on the cylinder of unit III, and a funnel-type sand supply device is installed above the cylinder of unit II. It is a tapered funnel, with a sand leaking tank at the bottom of the funnel, a sand leaking plate on the sand leaking tank, and a sand leaking hole on the sand leaking plate, and a circular hole at the bottom of the cylinder of No. The center of the circle is located in the center of the shell of No. Ⅲ unit.

Advantage of the utility model and the beneficial effect that produce are:

1. Using the funnel-type sand supply device, sand leaking board and frequency converter, it is possible to create a continuous wind-sand flow and quantitatively control the required wind-sand flow intensity. The operation is simple, the continuous working time is long, and the intensity of wind and sand flow is accurate, which can meet the needs of plant physiological and ecological experiments.

2. The unit cylinder can be used to carry out related research on plants, wind erosion, and soil surface evapotranspiration by wind and sand flow. Taking the influence of wind and sand flow on plant physiology and ecology as the experimental object, place the flowerpot of the pre-cultivated and healthy experimental plant in the circular hole of the unit cylinder before the experiment, so that the edge of the flowerpot is at the same level as the bottom of the unit cylinder . During the experiment, pour the dried and sieved fine sand prepared in advance into the funnel-type sand supply device, and the sand will automatically flow into the unit cylinder along the sand leakage holes on the sand leakage plate in the funnel-type sand supply device. When the sand particles are blown to the place where the experimental plants are placed, the environmental conditions of the wind and sand flow simulating the natural conditions are formed in the unit cylinder, thus realizing the experiment of artificially simulating the influence of the wind and sand flow on the soil surface covering plants in the natural wind and sand environment; the research results are not only for It is of great scientific significance to reveal the damage process and recovery mechanism of plants in the wind-sand environment and the adaptability of wind-sand resistance, and it can also provide a theoretical basis for the selection and cultivation of wind-sand-resistant species in wind-sand areas.

3. The airflow in the experimental section is uniform and the flow field is stable. At present, the power section of the field wind tunnel at home and abroad is placed on the vehicle or on the support. The central axis of the power section is higher than the central axis of the experimental section. The airflow in the experimental section is not uniform, and the airflow is suspended on the surface. The experimental effect is not significant. The axial flow fan of the utility model is directly placed on the ground, and the fan itself has a grounding casing. During the experiment, the centers of the cylinders of each unit were on the same horizontal axis, and the bottom plates of the cylinders of other units were flush with the bottom of the test section during the experiment. Therefore, the airflow reaching the experimental section is uniform and the flow field is stable.

4. The speed regulation range of the fan of the utility model is 1-25m/s. The wind speed in the unit cylinder is regulated by adjusting the angle of the fan blades to change the air volume and changing the frequency of the frequency converter; the wind blowing time is automatically controlled to reduce manual operation errors and ensure the rigor of the experiment. During the experiment, after setting the required wind blowing time and the frequency corresponding to the wind speed required for the experiment on the digital display time relay of the timer part, start the fan; when the set time is reached, the inverter and the timer are automatically disconnected, and the fan stops Running, reducing manual operation errors, so as to ensure that the wind blowing time of each experiment is almost consistent, and the rigor of the experiment is guaranteed.

5. The utility model is safe, reliable, low in noise, low in cost, light in weight, convenient to disassemble and easy to carry, durable in use and good in quality. The energization equipment of the whole device is controlled by a circuit breaker, which not only improves the safety of personnel operating the unit cylinder, but also protects the fan and frequency converter when the voltage is too low to drive the fan to run.

6. The unit cylinders of the utility model are all made of white iron sheet with a thickness of 1mm. It is light in weight and easy to disassemble and transport (it takes 1 hour to unload, assemble, disassemble and load); the overall equipment is resistant to high temperature, moisture and explosion, and is durable while being safe and reliable.

Description of drawings

Figure 1 is a schematic diagram of the structure of the utility model.

Detailed ways

Below, in conjunction with accompanying drawing, the technical scheme of the present utility model is described further:

As shown in Figure 1, a test device for plant physiological ecology with a funnel-type unit cylinder is composed of a generator 1, an air switch device 2, a timer 3, a frequency converter 4, an axial fan 5, and a No. 1 unit cylinder 13. The No. II unit cylinder 14, the No. III unit cylinder 15 (collectively referred to as the unit cylinder) and the wind speed measuring device 7 are composed. Timer 3 includes fuse box 8, AC contactor 9, digital display time relay 10, No. I button switch 11, No. II button switch 12; No. I unit barrel 13, No. II unit barrel 14, and No. III unit barrel 15 Weld the frame with angle iron 22, and then rivet the white iron sheet on the edge of the frame with rivets 23, and use a sealing strip 24 at the connection between the No. I unit barrel 13, the No. II unit barrel 14, and the No. Seal to prevent air leakage, and fasten with bolt 25. One end of unit cylinder 13 of No. Ⅰ is a bell mouth, and the bell mouth is connected with the axial flow fan 5, and the axial flow fan 5 is connected with the frequency converter 4; the generator 1 is connected with the circuit breaker 2, and the circuit breaker 2 is connected with the fuse box 8 Connection, the fuse box 8 is connected with the No. I button switch 11, the No. I button switch 11 is connected with the No. II button switch 12, and the No. II button switch 12 is respectively connected with the AC contactor 9 and the digital display time relay 10, and the digital display time relay 10 Connect with the AC contactor 9, connect the AC contactor 9 with the circuit breaker 2, and connect the AC contactor 9 with the frequency converter 4; the wind speed measuring device 7 is equipped with a QY-200 inclined pressure gauge 26 and an S-shaped pitot tube 27﹝ The correction coefficient is 0.85); and an observation window 21 with a length of 22 cm and a width of 4 cm is provided on the cylinder body 15 of No. III unit, the observation window 21 is located directly above the circular hole 20, and the observation window is covered with a glass plate. There is a funnel-type sand supply device 16 above the 2/3 cylinder body of the No. Ⅱ unit cylinder body 14. The funnel-type sand supply device 16 is a cube with a length of 0.62m, a width of 0.5m, and a height of 0.4m. Inside the cube is a conical funnel. There is a rectangular sand leakage tank 17 with a width of 0.05m at the bottom, and a sand leakage hole 19 is arranged on the sand leakage groove 17, and a sand leakage plate 18 with a diameter of 1-4mm is arranged on the sand leakage groove 17. A radius is 0.1m circular hole 20, and the circle center of circular hole 20 is positioned at the center position of No. III unit barrel 15.

Before the experiment, put the sand filter plate 18 into the sand filter tank 17 of the funnel type sand supply device 16; place the flower pots 6 of the pre-cultivated, healthy experimental plants on the three circular holes below the No. III unit cylinder 15. In the hole groove 20, the edge of the flower pot 6 and the bottom of the No. III unit cylinder 15 are on the same horizontal plane, so that the centers of each unit cylinder are all on the same horizontal axis, and the bottom plate of the unit cylinder is in the same level as the test section. The bottom is flush, so that the airflow reaching the experimental section is uniform and the flow field is stable.

During the experiment, after turning on the power, close the air switch 2, press the No. 1 button switch 11, start the timer 3, and when measuring the wind speed, pass the pitot tube 27 through the funnel-type sand supply device 16 on the top of the No. 2 unit cylinder 14 The middle bottom rectangular sand leakage tank 17 is connected with the inclined pressure gauge 26, and then the wind blowing time is set on the digital display time relay 10 according to the experimental needs, and the frequency converter 4 is adjusted to the wind speed measured in advance according to the experimental needs. Corresponding frequency, start frequency converter 4, and axial flow fan 5 begins to run; Operating errors make the wind blowing time of each experiment almost consistent, ensuring the rigor of the experiment . During the operation of the axial flow fan 5, if it is found that the setting of the wind blowing time is wrong, you can stop the frequency converter 4, press the button switch 12 No. Ⅱ, cut off the power supply between the timer 3 and the frequency converter 4, and reset Wind blowing time, then press No. 1 button switch 11, restart the frequency converter 4, the axial fan 5 begins to run. Pour the dried and sieved fine sand into the funnel-type sand supply device 16, and the sand will automatically flow into the cylinder body 14 of No. II unit along the sand leakage hole 19 on the sand leakage plate 18. When the sand particles are blown to the position where the plant is placed in the No. Ⅲ unit cylinder 15, a wind-sand flow environment under simulated natural conditions is formed in the unit cylinder, thereby realizing the artificial simulation of the influence of wind-sand flow on the soil surface covering plants in a natural wind-sand environment. experiment of. During the whole process of carrying out the wind-sand flow experiment, the state of the experimental sample being blown by the wind-sand flow can be observed through the glass plate of the No. III unit cylinder 15 and the observation window 21 . When the wind blowing time ends, the timer 3 automatically cuts off the power supply connected to the frequency converter 4, and the axial flow fan 5 stops running. After the experiment is over, the experimental plants are taken out from the experimental section, and the physiological ecology of the experimental plants is measured according to the experimental needs.

Claims (1)

1. A test device for funnel-type unit cylinders on plant physiology and ecology, which consists of a generator (1), an air switch (2), a timer (3), a frequency converter (4), and an axial fan (5) , No. Ⅰ unit cylinder (13), Ⅱ unit cylinder (14), Ⅲ unit cylinder (15) and wind speed measuring device (7), timer (3) includes fuse box (8), AC contact Device (9), digital display time relay (10), No. Ⅰ button switch (11), No. Ⅱ button switch (12); No. Ⅰ unit barrel (13), No. Ⅱ unit barrel (14), No. Ⅲ unit The cylinder body (15) is welded into a frame with angle iron (22), and then the white iron sheet is riveted on the edge of the frame with rivets (23). The connection between the unit cylinders (15) is sealed with a sealing strip (24) and fastened with bolts (25); one end of the No. 1 unit cylinder (13) is a bell mouth, and the bell mouth is connected to the axial fan (5). connection, the axial flow fan (5) is connected with the frequency converter (4); the generator (1) is connected with the circuit breaker (2), the circuit breaker (2) is connected with the fuse box (8), and the fuse box (8) is connected with No. 1 button switch (11) is connected, No. 1 button switch (11) is connected with No. 2 button switch (12), and No. 2 button switch (12) is respectively connected with the AC contactor (9) and the digital display time relay (10) , the digital display time relay (10) is connected with the AC contactor (9), the AC contactor (9) is connected with the circuit breaker (2), the AC contactor (9) is connected with the frequency converter (4); the wind speed measuring device ( 7) There is an inclined pressure gauge (26) and an S-type pitot tube (27); and an observation window (21) is provided on the No. Ⅲ unit cylinder (15), which is characterized by A funnel-type sand supply device (16) is provided, the funnel-type sand supply device (16) is a cube, inside the cube is a tapered funnel, the bottom of the funnel is provided with a sand leakage tank (17), and a sand drain tank (17) is provided with a The sand plate (18), the sand leaking plate (18) is provided with a sand leaking hole (19), the bottom of the No. Ⅲ unit cylinder (15) is provided with a circular hole slot (20), and the center Located in the center of the No. Ⅲ unit cylinder (15).