Doppler flow instrument device

Abstract

The utility model discloses a Doppler flow meter device, and relates to the technical field of flow meters. Comprising a mounting support, a flow instrument probe is mounted on the mounting support, a Venturi jet device is mounted on the front side of the mounting support, a jet orifice of the Venturi jet device corresponds to the detection end of the flow instrument probe, a supporting rod is in threaded connection with the rear side of the mounting support, and the upper portion of the supporting rod is sleeved with a lower fixing plate; the lower fixing plate is in threaded connection with a hand-screwing bolt and is in fastening connection with the supporting rod through the hand-screwing bolt. According to the Doppler flow instrument device, the Venturi jet device is connected with the vortex fan, the high-pressure air source is connected, when the high-pressure air source enters the jet cavity from an inlet of the jet device to form high-speed jet fluid, dirt on the detection end of the probe is removed through impact, collision and friction of the high-speed jet fluid, the probe is easier and more convenient to clean, and the detection efficiency is improved. Manual checking and cleaning are not needed, and the accuracy of data measurement is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of current meters, and specifically relates to a Doppler flowmeter device. Background Technique

[0002] A Doppler flowmeter is an instrument used to measure the flow velocity of fluids. Its principle is based on the Doppler effect. The Doppler effect refers to the phenomenon that when the wave source and the receiver are in relative motion, the frequency of the wave will change. The Doppler flowmeter utilizes this principle to calculate the flow velocity of the fluid by measuring the velocity of suspended particles or bubbles in the fluid. When the particles or bubbles in the fluid are in relative motion with the flowmeter sensor, it will cause a change in the frequency of the received signal, and the flow velocity of the fluid can be calculated based on this frequency change.

[0003] When installing a Doppler ultrasonic flowmeter, it is generally installed on the riverbed at the bottom of the water. When used underwater, the detection part of the probe is very easy to accumulate scale, which will affect the use of the instrument over time. Content of the Utility Model

[0004] The utility model provides a Doppler flowmeter device to solve the problems in the background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: A Doppler flowmeter device includes an installation support. A flowmeter probe is installed on the installation support. A Venturi injector is installed on the front side of the installation support, and the injection port of the Venturi injector corresponds to the detection end of the flowmeter probe. A support rod is threadedly connected to the rear side of the installation support, and an upper fixing plate is sleeved on the upper part of the support rod. A hand-tightening bolt is threadedly connected to the lower fixing plate and is tightly connected to the support rod through the hand-tightening bolt. A vortex blower is installed on the lower fixing plate, and the air outlet of the vortex blower is connected to the air inlet of the Venturi injector through a hose. The top end of the support rod is clamped with an upper fixing plate, and a control host is installed on the upper fixing plate. The control host is electrically connected to the flowmeter probe through a cable.

[0006] Further, a positioning hole is provided on the front side of the installation support, and the Venturi injector is tightly inserted into the positioning hole.

[0007] Further, a threaded hole is provided on the rear side of the installation support, and the bottom end of the support rod is provided with an external thread and is threadedly connected to the installation support through the external thread and the threaded hole.

[0008] Further, one end of the lower fixing plate is provided with a sleeve and is sleeved on the support rod through the sleeve.

[0009] Further, the hand-tightening bolt is threadedly connected to the sleeve, and the support rod is of a hollow structure.

[0010] Further, a sleeve hole is provided at the bottom of the upper fixing plate, and the upper fixing plate is clamped to the top end of the support rod through the sleeve hole.

[0011] Compared with the prior art, the present utility model provides a Doppler flowmeter device, which has the following

[0012] Beneficial effects:

[0013] In this Doppler flowmeter device, through the connection between the Venturi injector and the vortex blower, a high-pressure gas source is accessed. When the high-pressure gas source enters the injection cavity from the injector inlet to form a high-speed jet fluid, the dirt on the detection end of the probe is removed by the impact, collision, and friction of the high-speed jet fluid, making the probe cleaning simpler and more convenient, without the need for manual inspection and cleaning, and improving the accuracy of data measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a structural schematic diagram of the present utility model;

[0015] Figure 2 is a structural diagram of the mounting support part of the present utility model;

[0016] Figure 3 is a structural diagram of the support rod part of the present utility model.

[0017] In the figure: 1, mounting support; 2, flowmeter probe; 3, Venturi injector; 4, support rod; 5, lower fixing plate; 6, hand-tightening bolt; 7, vortex blower; 8, upper fixing plate; 9, control host; 10, positioning hole; 11, threaded hole; 12, external thread; 13, sleeve; 14, sleeve hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-3, the present utility model discloses a Doppler flowmeter device, including an installation support 1, on which a flowmeter probe 2 is installed. A Venturi injector 3 is installed on the front side of the installation support 1, and the injection port of the Venturi injector 3 corresponds to the detection end of the flowmeter probe 2. A support rod 4 is threadedly connected to the rear side of the installation support 1, and a lower fixing plate 5 is sleeved on the upper part of the support rod 4. A hand-tightening bolt 6 is threadedly connected to the lower fixing plate 5 and is fixedly connected to the support rod 4 through the hand-tightening bolt 6. A vortex blower 7 is installed on the lower fixing plate 5, and the air outlet of the vortex blower 7 is connected to the air inlet of the Venturi injector 3 through a hose. Through the connection between the Venturi injector 3 and the vortex blower 7, a high-pressure air source is connected. When the high-pressure air source enters the injection cavity from the injector inlet to form a high-speed jet fluid, by using the impact, collision, and friction of the high-speed jet fluid, the dirt on the detection end of the probe is cleaned and removed, making the probe cleaning simpler and more convenient, without the need for manual inspection and cleaning, and improving the accuracy of data measurement. The top end of the support rod 4 is snap-connected to an upper fixing plate 8, and a control host 9 is installed on the upper fixing plate 8. The control host 9 is electrically connected to the flowmeter probe 2 through a cable.

[0020] Specifically, a positioning hole 10 is provided on the front side of the installation support 1, and the Venturi injector 3 is tightly inserted into the positioning hole 10.

[0021] In this implementation scheme, the positioning hole 10 is an assembly structure for the installation and fixation of the Venturi injector 3.

[0022] Specifically, a threaded hole 11 is provided on the rear side of the installation support 1, and an external thread 12 is provided at the bottom end of the support rod 4. The support rod 4 is threadedly connected to the installation support 1 through the external thread 12 and the threaded hole 11.

[0023] In this implementation scheme, through the cooperation of the external thread 12 and the threaded hole 11, the disassembly and installation of the support rod 4 and the installation support 1 are facilitated.

[0024] Specifically, one end of the lower fixing plate 5 is provided with a sleeve 13, and the lower fixing plate 5 is sleeved on the support rod 4 through the sleeve 13.

[0025] In this implementation scheme, the sleeve 13 is an assembly structure for the installation between the lower fixing plate 5 and the support rod 4, and at the same time, it is convenient to adjust the height position of the lower fixing plate 5 as needed.

[0026] Specifically, the hand-tightening bolt 6 is threadedly connected to the sleeve 13, and the support rod 4 is a hollow structure.

[0027] In this implementation scheme, the hand-tightening bolt 6 is a fastener for the fixed connection between the lower fixing plate 5 and the support rod 4 to ensure the fixed position of the lower fixing plate 5.

[0028] Specifically, a socket hole 14 is provided at the bottom of the upper fixing plate 8, and the upper fixing plate 8 is snap-fitted to the top end of the support rod 4 through the socket hole 14.

[0029] In this embodiment, the socket hole 14 is an assembly structure for the installation and fixation between the upper fixing plate 8 and the support rod 4.

[0030] During use, through the connection between the Venturi injector 3 and the vortex blower 7, a high-pressure gas source is accessed. When the high-pressure gas source enters the injection chamber from the injector inlet to form a high-speed jet fluid, by utilizing the impact, collision, and friction of the high-speed jet fluid, the dirt on the detection end of the probe is cleaned and removed, making the probe cleaning simpler and more convenient, without the need for manual inspection and cleaning, and improving the accuracy of data measurement.

[0031] In summary, for this Doppler flowmeter device, through the connection between the Venturi injector 3 and the vortex blower 7, a high-pressure gas source is accessed. When the high-pressure gas source enters the injection chamber from the injector inlet to form a high-speed jet fluid, by utilizing the impact, collision, and friction of the high-speed jet fluid, the dirt on the detection end of the probe is cleaned and removed, making the probe cleaning simpler and more convenient, without the need for manual inspection and cleaning, and improving the accuracy of data measurement.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A Doppler flowmeter device, comprising a mounting support (1), characterized in that: A flowmeter probe (2) is installed on the mounting support (1). A Venturi injector (3) is installed on the front side of the mounting support (1), and the injection port of the Venturi injector (3) corresponds to the detection end of the flowmeter probe (2). A support rod (4) is threadedly connected to the rear side of the mounting support (1), and a lower fixing plate (5) is sleeved on the upper part of the support rod (4). A hand-tightening bolt (6) is threadedly connected to the lower fixing plate (5) and is tightly connected to the support rod (4) through the hand-tightening bolt (6). A vortex blower (7) is installed on the lower fixing plate (5), and the air outlet of the vortex blower (7) is connected to the air inlet of the Venturi injector (3) through a hose. The top end of the support rod (4) is snap-connected to an upper fixing plate (8), and a control host (9) is installed on the upper fixing plate (8). The control host (9) is electrically connected to the flowmeter probe (2) through a cable.

2. The Doppler flowmeter device according to claim 1, characterized in that: A positioning hole (10) is provided on the front side of the mounting support (1), and the Venturi injector (3) is tightly inserted into the positioning hole (10).

3. A Doppler flowmeter device according to claim 1, characterized in that: A threaded hole (11) is provided on the rear side of the mounting support (1). An external thread (12) is provided at the bottom end of the support rod (4), and the support rod (4) is threadedly connected to the mounting support (1) through the external thread (12) and the threaded hole (11).

4. A Doppler flowmeter device according to claim 1, characterized in that: A sleeve (13) is provided at one end of the lower fixing plate (5), and the lower fixing plate (5) is sleeved on the support rod (4) through the sleeve (13).

5. A Doppler flowmeter device according to claim 4, characterized in that: The hand-tightening bolt (6) is threadedly connected to the sleeve (13), and the support rod (4) is of a hollow structure.

6. The Doppler flowmeter device according to claim 1, characterized in that: A socket hole (14) is provided at the bottom of the upper fixing plate (8), and the upper fixing plate (8) is snap-connected to the top end of the support rod (4) through the socket hole (14).

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