Integrated fluid pressure exploration instrument

Abstract

An integrated fluid pressure exploration instrument comprises a supporting frame and a gas pressure exploration device, the gas pressure exploration device comprises an H-shaped transparent channel, a light ball, an air inducing device, an anemograph and a pressure metering device, the H-shaped transparent channel is installed on the supporting frame and comprises two vertical channels with the same size and a middle channel, and the light ball is installed on the middle channel. A light ball is placed in the middle channel, an anemograph is arranged above each vertical channel, an air inducing device is arranged below each vertical channel, and a pressure metering device is further arranged below the H-shaped transparent channel. According to the fluid pressure exploration instrument, the air inducing devices with different flow speeds are directly used for blowing, the movement condition of the light ball in the middle channel and the change phenomenon of the pressure metering device can be observed, the experiment phenomenon is more obvious and visual, and students can better understand the relationship between the fluid pressure and the flow speeds; and the anemograph can accurately measure the wind speed data of the air inducing device, and the pressure metering device can directly compare the pressure, so that the pressure metering device is more persuasive.

Description

TECHNICAL FIELD

[0001] The utility model relates to physical experiment device technical field, more specifically, it is a kind of integrated fluid pressure inquiry instrument. BACKGROUND

[0002] When the experiment explores the size of fluid pressure and flow rate, the book is only to blow air in the middle of two ping-pong balls, to rush water in the middle of two small boats and some classic small experiments.Teachers also only analyze the phenomenon by example, and then draw conclusions without data analysis through experiments.At the same time, when operating the experiment in the textbook, it is found that the experimental phenomenon is short-lived and difficult to control, and the change of pressure cannot be directly reflected.The analysis and summary of the phenomenon also lack specific physical quantities, and it is difficult to draw conclusions.There are many examples of flow rate and pressure in life, and many students cannot explain these phenomena and understand the relationship between fluid pressure and flow rate.

[0003] The Chinese patent with the authorized announcement number CN 204102394U discloses a fluid pressure and flow rate relationship demonstrator, which includes three different volume ventilation boxes, three same diameter transparent pipes, a demonstration ball, a sealing ring, a support, a spring and a screw rod.The patent mainly uses the same inner cavity of three transparent pipes and three ventilation boxes, and when the gas passes through the inner cavities of the medium ventilation box, the small ventilation box and the large ventilation box, the flow rate of the gas in the three ventilation boxes is different due to the different volumes of the three ventilation boxes, and the pressure in the three transparent pipes connected with the three ventilation boxes is different, which causes the demonstration ball in the three transparent pipes to drop different heights due to the different pressure differences between the upper and lower surfaces.

[0004] However, the above patent is based on the experimental theory that "the volume of ventilation box is different, and the flow rate is different", and students who do not understand the theory have difficulty understanding the experimental phenomenon;Moreover, the demonstrator cannot measure the data of wind speed and the size of pressure.Therefore, the patent still lacks intuition and data for demonstrating the relationship between fluid pressure and flow rate, and the persuasiveness is insufficient.Therefore, we provide an integrated fluid pressure inquiry instrument. UTILITY MODEL CONTENT

[0005] The utility model provides an integrated fluid pressure inquiry instrument, which mainly aims to overcome the shortcomings of the existing fluid pressure and flow rate relationship demonstrator, such as insufficient demonstration, lack of data and insufficient persuasiveness.

[0006] The utility model adopts the following technical solutions:

[0007] Integrated fluid pressure exploration instrument, including support frame and gas pressure exploration device arranged in the front of support frame, the gas pressure exploration device includes H type transparent channel, lightweight ball, wind guide device, anemometer and pressure measurement device, the support frame is installed with the H type transparent channel, the H type transparent channel includes two same vertical channels and an intermediate channel, the upper and lower ends of two vertical channels are open and mutually through, the both ends of the intermediate channel are connected with two vertical channels, the lightweight ball is placed in the intermediate channel, each vertical channel below is equipped with a wind guide device, each vertical channel above is equipped with an anemometer, the lower side of the H type transparent channel is also equipped with pressure measurement device, and the pressure measurement device is connected with the vertical channel.

[0008] In a preferred embodiment, the anemometer includes a wind speed sensor and a wind speed display connected with the wind speed sensor.

[0009] The wind guide device is preferably a blower or a hair dryer.

[0010] In a preferred embodiment, the pressure measurement device is a U-shaped tube pressure gauge, and the both ends of the U-shaped tube pressure gauge are connected with the side wall of the vertical channel through a rubber tube and a glass tube.

[0011] In a preferred embodiment, the pressure measurement device is two pressure sensors, and each pressure sensor is connected with the side wall of each vertical channel through a rubber tube and a glass tube.

[0012] Further, the back of the support frame is also provided with a liquid pressure demonstration device, the liquid pressure demonstration device includes an L-shaped water tank, a barrel, a funnel, a lightweight ball, a water pump and a power supply, an installation hole for installing the barrel is formed in the upper part of the L-shaped water tank, the funnel is fixed below the barrel, the pipe body of the funnel is inserted into the barrel from the bottom of the barrel, and the lightweight ball is placed at the funnel, the water pump is installed above the barrel, the water pump is electrically connected with the power supply, the water pump is connected with an inlet pipe and an outlet pipe, the other end of the inlet pipe is immersed in the water body of the L-shaped water tank, and the other end of the outlet pipe is arranged in the barrel.

[0013] Preferably, the inner diameter of the installation hole is greater than the outer diameter of the funnel body.

[0014] From the above description of the structure of the utility model, compared with the prior art, the utility model has the following advantages:

[0015] 1. The fluid pressure exploration instrument of the utility model, utilize the characteristics that two vertical channels of H type transparent channel are communicated with the middle channel, and the size of two vertical channels is same, can directly use the air blowing of different flow velocity to blow (namely change the air velocity size of air blowing device below two vertical channels), can observe the movement of lightweight ball in the middle channel and the change phenomenon of pressure measuring device, the experimental phenomenon is more obvious, intuitive, make the students better understand the relationship between fluid pressure and flow velocity, and the anemometer can accurately measure the wind speed data of air blowing device, and the pressure measuring device can also directly compare the pressure size, and is more persuasive.

[0016] 2. The pressure sensor can record the pressure size, and the experimental data comparison is significant. The experiment can be quantitatively analyzed, and is more persuasive.

[0017] 3. The fluid pressure exploration instrument of the utility model further comprises a liquid pressure demonstration device, water in the water tank is pumped into the barrel by the water pump, and flows out from the funnel back to the water tank. The change of the state of the ping pong ball is observed by changing the pumping speed of the water pump, so as to demonstrate the relationship between liquid pressure and flow velocity, and enable students to better understand fluid pressure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the front view of the utility model embodiment one.

[0019] Figure 2 It is the rear view of the utility model embodiment one.

[0020] Figure 3 It is the side view of the utility model embodiment one.

[0021] Figure 4 It is the front view of the utility model embodiment two. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model will be described below with reference to the drawings. In order to fully understand the utility model, many details are described below, but the utility model can be implemented without these details for those skilled in the art. For well-known components, methods and processes, the following will not be described in detail.

[0023] Embodiment one

[0024] The integrated fluid pressure exploration instrument, refer to Figure 1 and Figure 2 , comprising a support frame 100, a gas pressure exploration device and a liquid pressure demonstration device. Among them, the support frame 100 is inverted T type structure, and the gas pressure exploration device and the liquid pressure demonstration device are fixed on the front and back of the support frame 100 respectively.

[0025] Refer to Figure 1 andFigure 3 The gas pressure investigation device includes an H-shaped transparent channel 11, a lightweight ball 12, a fan 13, an anemometer 14, and a pressure measuring device 15. The H-shaped transparent channel 11 is fixed to the support frame 100 by a right-angle fastener. The H-shaped transparent channel 11 includes two vertical channels 111 of the same size and a middle channel 112. The upper and lower ends of the two vertical channels 111 are open and interconnected. The two ends of the middle channel 112 are respectively connected to the two vertical channels 111. The lightweight ball 12, preferably a ping-pong ball, is placed inside the middle channel 112. The two ends of the middle channel 112 are blocked by thin ropes to prevent the lightweight ball 12 from falling out.

[0026] Reference Figure 1 and Figure 3 Below each vertical channel 111, there is a drafting device 13. In this embodiment, the drafting device 13 is a blower. In other embodiments, the drafting device can also be a blower. Above each vertical channel 112, there is an anemometer 14. The anemometer 14 includes a wind speed sensor 141 and an anemometer display 142 connected to the wind speed sensor 141. The wind speed sensor 141 accurately measures the wind speed data of the drafting device and displays it on the anemometer display 142.

[0027] Reference Figure 1 and Figure 3 Below the aforementioned H-shaped transparent channel 11, a pressure measuring device 15 is also provided. In this embodiment, the pressure measuring device 15 is a U-tube manometer. Both ends of the U-tube manometer are connected to the side wall of the vertical channel 111 through a rubber tube 151 and a glass tube 152. To facilitate the fixing of the glass tube 152, a square column 153 is fixedly connected to the lower inner side of the vertical channel 111.

[0028] Before conducting the above-mentioned gas pressure investigation apparatus experiment, blow air into the opening of the rubber tube with a hair dryer and observe whether the liquid levels on both sides of the U-tube manometer change. If there is a change, it indicates that the airtightness is good; if there is no change, it indicates that the U-tube manometer is leaking.

[0029] During the experiment, turn on the right-side hair dryer, adjust it to the first setting, and blow air into the vertical channel above it. Observe the wind speed data of the anemometer and the height difference of the U-tube pressure gauge. Adjust the hair dryer to the second setting and continue to blow air into the vertical channel above it. Observe the wind speed data of the anemometer and the height difference of the U-tube pressure gauge. Keep the right-side hair dryer at the first setting, turn on the left-side hair dryer, and adjust it to the second or third setting. Blow air into the vertical channel above the left side and observe the wind speed data of the anemometer and the height difference of the U-tube pressure gauge.

[0030] Reference Figure 2 and Figure 3The aforementioned liquid pressure demonstration device includes an L-shaped water tank 21, a barrel 22, a funnel 23, a second lightweight ball 24, a water pump 25, and a power supply 26. An mounting hole 210 is provided at the top of the L-shaped water tank 21, and the barrel is placed in this mounting hole 210. A circular hole is provided at the bottom of the barrel 22, and the tube of the funnel 23 is inserted into the barrel 22 through the circular hole and fixed with glue to secure the funnel 23. The second lightweight ball 24 is placed in the funnel body of the funnel 23; preferably, the second lightweight ball 24 is a ping-pong ball.

[0031] Reference Figure 2 and Figure 3 The inner diameter of the mounting hole 210 is larger than the outer diameter of the funnel 23, so that the barrel 22 connected to the funnel 23 can be removed from the mounting hole 210 for the demonstration of gas pressure.

[0032] Reference Figure 2 and Figure 3 The aforementioned water pump 25 is installed above the tank 22 and is electrically connected to the power supply 26. The water pump 25 is connected to an inlet pipe 251 and an outlet pipe 252. The other end of the inlet pipe 251 is immersed in the water in the L-shaped water tank 21, and the other end of the outlet pipe 252 is located inside the tank 22. The water pump 25 draws water from the L-shaped water tank 21 into the tank 22 through the inlet pipe 251 and the outlet pipe 252. The water in the tank 22 then flows back into the L-shaped water tank 21 through the funnel 23, forming a continuous, self-circulating system.

[0033] During the experiment of this liquid pressure demonstration device, the water pump is started to draw water from the L-shaped water tank into the cylinder. The water flows out from the funnel, and the light ball II is placed at the funnel to observe its state.

[0034] Example 2

[0035] Reference Figure 4 The main difference between this embodiment and Embodiment 1 is that the pressure measuring device 15 in this embodiment uses two pressure sensors. Each pressure sensor is connected to the side wall of each vertical channel 111 via a rubber tube 151 and a glass tube 152. Using pressure sensors allows for recording the pressure magnitude, resulting in significant comparisons of experimental data. Quantitative analysis of the experiment is possible, making the data more convincing.

[0036] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. An integrated fluid pressure measuring instrument, comprising a support frame and a gas pressure measuring device disposed on the front of the support frame, characterized in that: The gas pressure exploring device comprises an H-shaped transparent channel, light balls, air guiding devices, air speed meters and pressure measuring devices, the support frame is provided with the H-shaped transparent channel, the H-shaped transparent channel comprises two vertical channels with the same size and a middle channel, the two vertical channels are open at the upper and lower ends and are mutually through, the two ends of the middle channel are connected with the two vertical channels respectively, the light balls are placed in the middle channel, each vertical channel is provided with an air guiding device below, each vertical channel is provided with an air speed meter above, the H-shaped transparent channel is further provided with pressure measuring devices below, and the pressure measuring devices are connected with the vertical channels respectively.

2. The integrated fluid pressure explorer of claim 1, wherein: The air speed meter comprises an air speed sensor and an air speed display connected with the air speed sensor.

3. The integrated fluid pressure explorer of claim 1, wherein: The air guiding device is a blower or a hair dryer.

4. The integrated fluid pressure explorer of claim 1, wherein: The pressure measuring device is a U-shaped tube pressure gauge, and the two ends of the U-shaped tube pressure gauge are connected with the side walls of the vertical channels through rubber tubes and glass tubes.

5. The integrated fluid pressure explorer of claim 1, wherein: The pressure measuring device comprises two pressure sensors, and each pressure sensor is connected with the side wall of each vertical channel through a rubber tube and a glass tube.

6. The integrated fluid pressure explorer of claim 1, wherein: The back of the support frame is further provided with a liquid pressure demonstration device, the liquid pressure demonstration device comprises an L-shaped water tank, a barrel, a funnel, light balls, a water pump and a power supply, the upper part of the L-shaped water tank is provided with a mounting hole for mounting the barrel, the funnel is fixed below the barrel, the pipe of the funnel is inserted into the barrel from the bottom of the barrel, and the light balls are placed in the funnel; the water pump is installed above the barrel, the water pump is electrically connected with the power supply, the water pump is connected with an inlet pipe and an outlet pipe, the other end of the inlet pipe is immersed in the water body of the L-shaped water tank, and the other end of the outlet pipe is arranged in the barrel.

7. The integrated fluid pressure explorer of claim 6, wherein: The inner diameter of the mounting hole is greater than the outer diameter of the funnel.

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