Automatic digital display flow meter

Abstract

The invention relates to an automatic digital display flow velocity meter in the technical field of fluid flow velocity detection, which comprises a Pitot tube, two connecting hoses, two coaxial and horizontally arranged containers, a water pump and a three-way valve, and B ends of the two connecting hoses are communicated with the two containers in a one-to-one correspondence manner; the water inlet end of the water pump is connected with a water source, and the water outlet end is communicated with two containers through a three-way valve; the two containers are provided with pressure detection equipment for detecting the hydraulic pressure of the inner cavities of the containers; the processor is in signal connection with the display screen and the pressure detection equipment; the container, the pressure detection equipment, the processor and the display screen are arranged to replace a pressure measuring tube in the prior art, so that the flow velocity visualization function of the to-be-detected fluid can be realized, the flow velocity of the to-be-detected fluid can be conveniently and quickly known, the detection operation is simplified, a large amount of time is saved for a large amount of detection data, and the detection efficiency is improved. And meanwhile, result errors caused by calculation errors or data errors are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid flow velocity detection, and particularly to an automatic digital display flow velocity meter. Background Art

[0002] When using a Pitot tube for velocity and pressure measurement, a Pitot tube, two connecting hoses, and two pressure measuring tubes are required. During use, as Figure 1 shown, the two pressure measuring tubes are vertically fixed by a bracket, and then the pressure measuring tubes and the Pitot tube are connected by the connecting hoses. Before detection, it is necessary to individually extract the gas in the pressure measuring tubes with the help of an air suction device, or inject water into the pressure measuring tubes one by one with the help of a water supply device to make the connecting hoses gas-free, that is, complete the exhaust work of the connecting hoses, and then the operation can be carried out, making the operation more cumbersome.

[0003] Moreover, since small air bubbles are easily adhered to the inner wall of the connecting hoses during the exhaust process of the connecting hoses, multiple exhaust operations are required, or the worker shakes or knocks the connecting hoses during the exhaust operation until there are no small air bubbles on the inner wall of the connecting hoses. This exhaust method is not only cumbersome in operation but also inefficient.

[0004] And the above structure can only directly obtain the values inside the two pressure measuring tubes. It is necessary to subtract the values of the two pressure measuring tubes to obtain the pressure difference, and then calculate the fluid flow velocity through the pressure difference. Since there are many positions to be detected (more than a dozen or even dozens) during actual operation, the above method not only wastes time but also easily causes confusion (the data of the corresponding pressure measuring tubes should be used during calculation, but in fact, they are not corresponding), resulting in incorrect results.

[0005] Therefore, we provide an automatic digital display flow velocity meter. Summary of the Invention

[0006] In order to overcome the deficiencies in the background art, the present invention discloses an automatic digital display flow velocity meter.

[0007] To achieve the above invention purpose, the present invention adopts the following technical solutions: An automatic digital display flow velocity meter includes a Pitot tube and two connecting hoses. The A ends of the connecting hoses are correspondingly communicated with the water outlet ends of the corresponding Pitot tubes. It also includes two coaxially and horizontally arranged containers, a water pump, and a three-way valve. The B ends of the two connecting hoses are correspondingly communicated with the two containers one by one; the water inlet end of the water pump is connected to a water source, and the water outlet end is communicated with the two containers through the three-way valve, so that the two containers can be simultaneously communicated with the water outlet end of the water pump or none of them are communicated; Both containers are provided with pressure detection devices for detecting the hydraulic pressure in their inner cavities; It also includes a processor and a display screen. The processor is signal-connected to the display screen and the pressure detection device.

[0008] Preferably, it further includes a pulling assembly capable of pulling down the connecting hose so that the connecting hose is in a taut posture.

[0009] Preferably, the pulling assembly includes a base, a vertical guide post is arranged on the top surface of the base, a slider is connected to the vertical guide post in a vertically sliding manner, and a hook body capable of hooking the connecting hose is arranged on the slider.

[0010] Preferably, a locking screw capable of locking its height is screwed on the slider, and the slider and the hook body are connected by an elastic member.

[0011] Preferably, the vertical guide post is of an n-shaped structure.

[0012] Preferably, the sliders are arranged on both side parts of the vertical guide post.

[0013] Preferably, the water pump is installed in the middle of the top surface of the base, and elastic feet are arranged at the bottom of the base.

[0014] Preferably, suction cups are arranged at the bottoms of the elastic feet.

[0015] Preferably, the display screen is installed at the top of the inner cavity of the vertical guide post.

[0016] Preferably, a horizontal sleeve is arranged on the vertical guide post, and the containers are coaxially arranged at both ends of the sleeve.

[0017] Due to the adoption of the technical scheme as described above, the present invention has the following beneficial effects: 1. Due to the settings of the container, the pressure detection device, the processor and the display screen, replacing the manometer in the prior art, it can realize the function of visualizing the flow rate of the fluid to be measured, and it is convenient and fast to know the flow rate of the fluid to be measured, simplifying the detection operation. At the same time, for a large number of detection data, a large amount of time is saved, and the result will not be wrong due to calculation errors or data errors; 2. Due to the settings of the water pump and the three-way valve, only by opening the three-way valve and the water pump can the operation of discharging the gas in the connecting hose be carried out. By closing the three-way valve, the subsequent detection operation will not be affected, realizing the function of quickly and conveniently discharging the gas in the connecting hose.

[0018] 3. Due to the setting of the pulling assembly, combined with the vibration generated during the operation of the water pump, the connecting hose in the taut posture vibrates, accelerating the discharge of the tiny bubbles adhering to the inner wall of the connecting hose and simplifying the operation. Description of the Drawings

[0019] Figure 1 It is a structural schematic diagram of the prior art; Figure 2 It is a structural schematic diagram of the present invention; Figure 3This is the structural schematic diagram of the three-way valve in the present invention; Figure 4 This is the structural schematic diagram of the pulling component in the present invention; Figure 5 This is the process flow block diagram of the present invention.

[0020] In the figure: 1, Pitot tube; 2, connecting hose; 3, container; 4, water pump; 5, three-way valve; 6, pressure detection device; 7, processor; 8, display screen; 9, pulling component; 91, base; 92, vertical guide post; 93, slider; 94, hook body; 95, locking screw; 96, elastic member; 97, elastic support foot; 98, suction cup; 10, sleeve. Detailed implementation manners

[0021] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", etc. indicating the orientation or position relationship, it is only corresponding to the drawings of the present application for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation.

[0022] Embodiment 1, in combination with the attached Figure 2-5 , an automatic digital display flow velocity meter, including a Pitot tube 1, two connecting hoses 2, a container 3, a water pump 4, a three-way valve 5, two pressure detection devices 6, a processor 7 and a display screen 8; The two containers 3 are coaxially and horizontally arranged. The A ends of the connecting hoses 2 are correspondingly communicated with the water outlet ends of the corresponding Pitot tubes 1, and the B ends of the two connecting hoses 2 are correspondingly communicated with the two containers 3 one by one; the water inlet end of the water pump 4 is connected to a water source, and the water outlet end is communicated with the two containers 3 through the three-way valve 5, so that the two containers 3 can be simultaneously communicated with the water outlet end of the water pump 4 or none of them are communicated; The detection ends of the two pressure detection devices 6 are hermetically embedded in the containers 3 one by one. Among them, the processor 7 is signal-connected to the display screen 8 and the pressure detection devices 6; specifically, the hydraulic pressures detected by the two pressure detection devices 6 are processed and analyzed by the processor 7 to obtain the flow velocity of the fluid, and then displayed through the display screen 8.

[0023] According to needs, the processor 7 can be installed inside the housing of the display screen 8.

[0024] According to needs, the pressure detection device 6 is a water pressure sensor.

[0025] In combination with the attached Figure 2 , 4 , further, it further includes a pulling component 9 capable of pulling the connecting hose 2 downward so that the connecting hose 2 is in a taut posture; The pulling assembly 9 includes a base 91. Elastic feet 97 are provided at the bottom of the base 91, and suction cups 98 are provided at the bottoms of the elastic feet 97; in this way, the base 91 can be stably installed on the workbench surface.

[0026] Furthermore, a vertical guide post 92 is provided on the top surface of the base 91. A slider 93 is connected to the vertical guide post 92 in a vertically sliding manner, and a hook body 94 capable of hook-connecting the connecting hose 2 is provided on the slider 93. In this way, the self-weight tendency of the slider 93 can be utilized to pull the connecting hose 2 downward by the hook body 94, so that the connecting hose 2 is in a taut state.

[0027] As required, to provide a position for installing the display screen 8, the vertical guide post 92 is of an n-shaped structure, and the display screen 8 is installed at the top of the inner cavity of the vertical guide post 92.

[0028] To ensure the coaxial and horizontal installation of the two containers 3, a horizontal sleeve 10 is provided on the vertical guide post 92, and the two ends of the sleeve 10 are coaxially provided with the containers 3; As required, the sleeve 10 is installed at the top of the vertical guide post 92; As required, the sleeve 10 has a mounting plate, and the mounting plate can be installed on the top surface of the vertical guide post 92. Pipe sleeves are provided on the upper surface of the mounting plate. One container 3 is respectively installed and fixed through the two sleeves 10. Furthermore, the container 3 can be a cylindrical hollow structure, so that the two containers 3 are coaxial and at the same height, that is, the two containers 3 are coaxial and horizontally arranged.

[0029] As required, the two containers 3 are also arranged at intervals, and a three-way valve 5 is provided between the opposite ends of the two containers 3.

[0030] Furthermore, to utilize the vibration energy during the operation of the water pump 4 to vibrate the connecting hose 2 in a taut posture and remove the small bubbles attached to the inner wall of the connecting hose 2, the water pump 4 is installed in the middle of the top surface of the base 91.

[0031] Furthermore, a locking screw 95 capable of locking its height is screwed on the slider 93, and the slider 93 and the hook body 94 are connected through an elastic member 96; such a setting can reduce the weight of the slider 93.

[0032] Furthermore, to simultaneously pull the two connecting hoses 2 downward, sliders 93 are provided on both sides of the vertical guide post 92. In this way, the hook bodies 94 on the two sliders 93 can respectively hook the corresponding connecting hoses 2. Under the action of the self-weight of the sliders 93 or under the action of the elastic member 96 tending to reset after the locking screw 95 locks the positions of the sliders 93, the connecting hoses 2 are pulled forward, so that the connecting hoses 2 are in a taut posture.

[0033] The parts not detailed in the present invention are prior arts. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, aiming to include all changes falling within the meaning and scope of equivalent elements in the present invention.

Claims

1. An automatic digital display flow velocity meter, comprising a Pitot tube (1) and two connecting hoses (2), wherein the A end of the connecting hose (2) is correspondingly communicated with the water outlet end of the corresponding Pitot tube (1), and is characterized in that: It also includes two coaxially and horizontally arranged containers (3), a water pump (4) and a three-way valve (5). The B ends of the two connecting hoses (2) are in one-to-one correspondence and communication with the two containers (3); the water inlet end of the water pump (4) is connected to a water source, and the water outlet end is connected to the two containers (3) through the three-way valve (5) so that the two containers (3) can be simultaneously connected to the water outlet end of the water pump (4) or none of the three are connected; Both of the two containers (3) are provided with pressure detection devices (6) for detecting the hydraulic pressure in their inner cavities; It also includes a processor (7) and a display screen (8), and the processor (7) is in signal connection with the display screen (8) and the pressure detection device (6).

2. The automated digital flow velocity meter according to claim 1, wherein: It also includes a pulling component (9) that can pull down the connecting hose (2) so that the connecting hose (2) is in a taut posture.

3. An automatic digital flow velocity meter according to claim 2, characterized in that: The pulling component (9) includes a base (91). A vertical guide post (92) is provided on the top surface of the base (91). A slider (93) is connected to the vertical guide post (92) in a vertically sliding manner, and the slider (93) is provided with a hook body (94) that can hook the connecting hose (2).

4. An automatic digital flow velocity meter according to claim 3, characterized in that: The slider (93) is screwed with a locking screw (95) that can lock its height, and the slider (93) is connected to the hook body (94) through an elastic member (96).

5. An automatic digital flow velocity meter according to claim 4, characterized in that: The vertical guide post (92) is of an n-shaped structure.

6. An automated digital flow velocity meter according to claim 5, characterized in that: The slider (93) is provided on both side parts of the vertical guide post (92).

7. An automatic digital flow velocity meter according to claim 5 or 6, characterized in that: The water pump (4) is installed in the middle of the top surface of the base (91), and elastic feet (97) are provided at the bottom of the base (91).

8. An automatic digital flow velocity meter according to claim 7, characterized in that: A suction cup (98) is provided at the bottom of the elastic foot (97).

9. The automated digital flow velocity meter according to claim 5, characterized in that: The display screen (8) is installed at the top of the inner cavity of the vertical guide post (92).

10. The automated digital flow velocity meter according to claim 3, characterized in that: The vertical guide post (92) is provided with a horizontal sleeve (10), and the two containers (3) are coaxially provided at both ends of the sleeve (10).

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