Non-contact ultrasonic flow meter

Abstract

A non-contact ultrasonic flow meter, comprising a mounting base (1) and a mounting cover (2), wherein the mounting cover (2) covers the mounting base (1), so that a fluid pipe passes through a mounting slot (12) formed on the mounting base (1); the mounting base (1) is provided with a clamping member (3) and an elastic member (4); the mounting cover (2) is provided with an abutment portion (21) that extends into the mounting slot (12); the clamping member (3) is provided with a clamping portion (31) having an arc-shaped cross section; the clamping portion (31) is provided with a measurement head (5); the elastic member (4) drives the clamping member (3) to slide relative to the mounting cover (2), so that the clamping portion (31) and the abutment portion (21) clamp the outer wall of the fluid pipe. The mounting base (1), the mounting cover (2), and the clamping member (3) are used to realize the measurement of a mounted fluid pipe by the measurement head (5), without additionally inserting a device into the fluid pipe, thereby avoiding the problem of large mounting difficulty, and being conducive to rapidly mounting a measurement device.

Description

A non-contact ultrasonic flow meter Technical Field

[0001] This utility model relates to the field of flow meter technology, and more specifically to a non-contact ultrasonic flow meter. Background Technology

[0002] Refrigerant flow meters are widely used in refrigeration, food, petroleum, chemical, metallurgy, and paper industries. They can display total flow, instantaneous flow, and full-scale percentage. The flow units are numerous, including cubic meters, gallons, liters, standard cubic meters, and standard liters. Fixed pressure and temperature parameters can be set to compensate for gas flow. For applications where pressure and temperature variations are minimal, this instrument can be used for fixed compensation and integration.

[0003] According to announcement number CN206258146U, announcement date: June 16, 2017, an ultrasonic refrigerant flow meter is disclosed, comprising: a main unit, a first ultrasonic sensor and a second ultrasonic sensor controlled by the main unit, and a fluid medium inlet and a fluid medium outlet connected to the main unit. The first ultrasonic sensor is located at the fluid medium inlet, and the second ultrasonic sensor is located at the fluid medium outlet. The advantages of this ultrasonic refrigerant flow meter compared to existing technologies are that it utilizes ultrasound to achieve non-contact refrigerant flow measurement, eliminating problems such as wear and corrosion that occur during long-term operation; there are no obstructions in the fluid pipe section, resulting in no pressure loss; the fluid measurement accuracy can reach up to 0.2 grade, and the flow measurement range for small-diameter DN4 pipes can reach up to 0.004~1m³ / h.

[0004] In the prior art, including the aforementioned patent, the host is connected to the fluid pipeline, and the first and second ultrasonic sensors installed on the host are used to detect the flow rate of the fluid medium inlet and outlet of the host. This device still needs to be connected to the fluid pipeline to measure and detect the flow rate therein, which is inconvenient for measuring the flow rate of an already installed fluid pipeline. Utility Model Content

[0005] The purpose of this invention is to provide a non-contact ultrasonic flow meter to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a non-contact ultrasonic flow meter, comprising a mounting base and a mounting cover, wherein the mounting cover is fitted onto the mounting base so that a fluid pipe passes through a mounting groove opened on the mounting base, the mounting base is provided with a clamping member and an elastic member, and the mounting cover is provided with an abutting part extending into the mounting groove, the clamping member is provided with a clamping part with an arc-shaped cross-section, and a detection head is provided on the clamping part, the elastic member drives the clamping member to slide relative to the mounting cover so that the clamping part and the abutting part are clamped to the outer wall of the fluid pipe.

[0007] Preferably, the clamping part is provided with a water trough arranged along the axial direction, and the bottom surface of the water trough is inclined to have a low position and a high position.

[0008] Preferably, the clamping part has several circumferential grooves arranged in a linear array along the axial direction.

[0009] Preferably, the clamping member has a connecting hole, the first end of the connecting hole is a spray outlet, the spray outlet is located on the inner arc surface of the clamping part, and the mounting base is provided with a movable column that extends into the connecting hole. The clamping member is driven to slide so that the movable column is located in the connecting hole and slides like a piston.

[0010] Preferably, an abutment plate is rotatably provided in the circumferential settling tank, with the first end of the abutment plate extending into the nozzle. The clamping part and the abutment part are clamped to the outer wall of the fluid pipe so that the second end of the abutment plate abuts against the outer wall of the fluid pipe in the default state. Gas is ejected from the nozzle to drive the abutment plate to reciprocate and rotate to abut against the outer wall of the fluid pipe.

[0011] Preferably, the clamping member is symmetrically provided with sliding parts, the sliding parts are vertically slidably disposed on the mounting base, and the first end of the elastic member abuts against the sliding parts to drive the sliding parts to slide towards the mounting cover side.

[0012] In the above technical solution, the non-contact ultrasonic flow meter provided by this utility model has the following beneficial effects: It utilizes a mounting base, mounting cover, and clamping components to achieve contact detection of the installed fluid pipeline by the detection head, eliminating the need for additional connection of the device to the fluid pipeline and thus avoiding installation difficulties, facilitating rapid installation of the detection device. Secondly, the presence of elastic components allows the clamping components and elastic components to buffer the vibration of the fluid pipeline when the fluid in the pipeline vibrates due to changes in flow rate, thereby reducing the possibility of damage to the fluid pipeline and the detection head, and improving the service life of the detection head.

[0013] Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 is a schematic diagram of the overall structure provided in the embodiment of this utility model;

[0016] Figure 2 is a schematic cross-sectional view of the overall structure provided in the embodiment of this utility model;

[0017] Figure 3 is a schematic diagram of the structure of the clamping member provided in an embodiment of the present utility model;

[0018] Figure 4 is a partially enlarged schematic diagram of point A in Figure 2 provided in an embodiment of this utility model;

[0019] Figure 5 shows the flow meter at point B in Figure 4 provided in an embodiment of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Mounting base; 11. Connecting part; 12. Mounting groove; 13. Movable column; 2. Mounting cover; 21. Abutting part; 3. Clamping part; 31. Clamping part; 311. Water drop trough; 312. Circumferential settling trough; 32. Sliding part; 33. Connecting hole; 331. Spray outlet; 4. Elastic element; 5. Detection head; 6. Abutting plate.

[0022] Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0024] As shown in Figures 1-5, a non-contact ultrasonic flow meter includes a mounting base 1 and a mounting cover 2. The mounting cover 2 covers the mounting base 1 so that the fluid pipe passes through the mounting groove 12 opened on the mounting base 1. The mounting base 1 is provided with a clamping member 3 and an elastic member 4, while the mounting cover 2 is provided with an abutting part 21 that extends into the mounting groove 12. The clamping member 3 is provided with a clamping part 31 with an arc-shaped cross-section, and a detection head 5 is provided on the clamping part 31. The elastic member 4 drives the clamping member 3 to slide relative to the mounting cover 2 so that the clamping part 31 and the abutting part 21 are clamped to the outer wall of the fluid pipe.

[0025] Specifically, as shown in Figure 1, the mounting base 1 is provided with a connecting part 11 for electrical connection, and the mounting cover 2 can be installed on the mounting base 1 so that the contact part 21 extends into the mounting groove 12. The clamping member 3 is slidably disposed on the mounting base 1, and the clamping part 31 of the clamping member 3 is located in the mounting groove 12. The mounting cover 2 can be installed on the mounting base 1 so that the installed fluid pipe passes through into the mounting groove 12. The elastic member 4 drives the clamping member 3 to slide so that the clamping part 31 and the contact part 21 are clamped to the outer wall of the fluid pipe. At this time, the detection head 5 on the clamping part 31 can measure and detect the fluid in the fluid pipe. By using the mounting base 1, the mounting cover 2 and the clamping member 3, the detection head 5 can be used to perform contact detection on the installed fluid pipe. It is not necessary to connect the device to the fluid pipe separately, which would cause the installation difficulty to be great, and it is convenient to install the detection device quickly. Secondly, by utilizing the presence of the elastic element 4, when the fluid in the fluid pipeline vibrates due to changes in flow rate, the clamping element 3 and the elastic element 4 can buffer the vibration of the fluid pipeline, thereby reducing the possibility of damage to the fluid pipeline and the detection head 5 and improving the service life of the detection head 5.

[0026] Among them, the elastic element 4 can be replaced by other elastic objects known to those skilled in the art, such as springs, elastic plates, or airbags. The detection head 5 is an ultrasonic detector. The specific working principle and electrical connection of the detection head 5 are common technical knowledge known to those skilled in the art and will not be described in detail here.

[0027] Furthermore, the clamping member 3 is symmetrically provided with sliding parts 32. The sliding parts 32 are vertically slidably disposed on the mounting base 1. The first end of the elastic member 4 abuts against the sliding parts 32 to drive the sliding parts 32 to slide towards the mounting cover 2 side, as shown in Figure 2. The sliding parts 32 are slidably disposed on the mounting base 1 so that the clamping member 3 slides vertically on the mounting base 1. The sliding parts 32 are used to increase the sliding stability of the clamping member 3.

[0028] In the above technical solution, the mounting base 1, mounting cover 2, and clamping component 3 are used to enable the detection head 5 to perform contact detection on the installed fluid pipeline. This eliminates the need to connect the device to the fluid pipeline, thus avoiding installation difficulties and facilitating rapid installation of the detection device. Furthermore, the presence of the elastic component 4 allows the clamping component 3 and the elastic component 4 to buffer the vibration of the fluid pipeline caused by flow rate changes, thereby reducing the possibility of damage to the fluid pipeline and the detection head 5 and extending the service life of the detection head 5.

[0029] As a further embodiment of this utility model, the clamping part 31 is provided with a water drop trough 311 arranged along the axial direction, and the bottom surface of the water drop trough 311 is inclined to have a low position and a high position.

[0030] Specifically, as shown in Figure 3, a water trough 311 is provided on the clamping member 3. The bottom surface of the water trough 311 has a low position and a high position. When the fluid inside the fluid pipe is flowing and transporting, if the temperature of the transported fluid is low, the outside temperature is higher than the temperature of the fluid pipe, which easily causes condensation to form on the outer wall of the fluid pipe. The condensation flowing into the space between the detection head 5 and the outer wall of the fluid pipe can easily cause errors in the detection data of the detection head 5. However, with the presence of the water trough 311, the outer wall of the fluid pipe is affected by gravity and flows downward. The condensation flows down into the water trough 311, and the bottom of the water trough 311 flows out to the low position, thereby avoiding the condensation on the outer wall of the fluid pipe from being located on the detection head 5 and causing errors in the detection data of the detection head 5, thus improving the accuracy of the data.

[0031] As a further embodiment provided in this utility model, the clamping part 31 is provided with a plurality of circumferential grooves 312 arranged in a linear array along the axial direction.

[0032] Specifically, as shown in Figure 3, the circumferential groove 312 of the clamping part 31 is formed along the circumferential direction of the clamping part 31. When the clamping part 31 and the contact part 21 are clamped on the outer wall of the fluid pipe, the circumferential groove 312 can increase the friction between the clamping part 3 and the outer wall of the fluid pipe, thereby improving the clamping stability of the fluid pipe. In addition, the circumferential groove 312 can also facilitate the drainage of condensate between the detection head 5 and the outer wall of the fluid pipe, thereby improving the smoothness of condensate drainage.

[0033] As a further embodiment of this utility model, the clamping member 3 is provided with a connecting hole 33, the first end of the connecting hole 33 is a spray outlet 331, the spray outlet 331 is located on the inner arc surface of the clamping part 31, and the mounting base 1 is provided with a movable column part 13 that extends into the connecting hole 33. The clamping member 3 is driven to slide so that the movable column part 13 is located in the connecting hole 33 and slides like a piston.

[0034] Specifically, as shown in Figure 3, the movable column 13 of the mounting base 1 extends into the connecting hole 33. When the clamping part 31 and the contacting part 21 are clamped on the outer wall of the fluid pipe, if the fluid pipe is vibrated by the vibration of the fluid transport, the clamping part 3 will be vibrated and compress the elastic part 4 to slide. At this time, the movable column 13 moves into the connecting hole 33 to increase the air pressure in the connecting hole 33. At this time, the gas in the connecting hole 33 is ejected along the nozzle 331 and injected into the circumferential settling groove 312. Then, the connecting hole 33 and the nozzle 331 are used to further blow away the condensate on the outer wall of the fluid pipe, thereby further improving the accuracy of the detection data of the detection head 5.

[0035] As a further embodiment of this utility model, a contact plate 6 is rotatably provided in the circumferential settling tank 312. The first end of the contact plate 6 extends into the spray outlet 331. The clamping part 31 and the contacting part 21 are clamped to the outer wall of the fluid pipe so that the second end of the contact plate 6 in the default state abuts against the outer wall of the fluid pipe. Gas is ejected from the spray outlet 331 to drive the contact plate 6 to reciprocate to abut against the outer wall of the fluid pipe.

[0036] Specifically, as shown in Figure 5, the end of the contact plate 6 facing away from the drain trough 311 is the first end, and the end facing the drain trough 311 is the second end. When the clamping part 31 and the contact part 21 are clamped on the outer wall of the fluid pipe, the second end of the contact plate 6 abuts against the outer wall of the fluid pipe to further improve the clamping and fixing stability of the clamping member 3 on the fluid pipe. When the fluid pipe is subjected to vibration due to the vibration of the fluid transport, the clamping member 3 will be vibrated and compress the elastic member 4 to slide. The gas in the connecting hole 33 is ejected along the nozzle 331 and injected into the circumferential sink 312. The first end of the contact plate 6 is driven by the gas ejected from the nozzle 331 to repeatedly flip and impact the fluid pipe to interfere with the vibration of the fluid pipe caused by the fluid impact, thereby avoiding resonance on the mounting base 1 and the clamping member 3, which would cause the mounting base 1 and the mounting cover 2 to loosen and fall off the fluid pipe due to resonance, thereby further improving the clamping stability.

[0037] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A non-contact ultrasonic flow meter, characterized in that, The device includes a mounting base (1) and a mounting cover (2). The mounting cover (2) covers the mounting base (1) so that the fluid pipe passes through the mounting groove (12) opened on the mounting base (1). The mounting base (1) is provided with a clamping member (3) and an elastic member (4). The mounting cover (2) is provided with an abutting part (21) that extends into the mounting groove (12). The clamping member (3) is provided with a clamping part (31) with an arc-shaped cross section. The clamping part (31) is provided with a detection head (5). The elastic member (4) drives the clamping member (3) to slide relative to the mounting cover (2) so that the clamping part (31) and the abutting part (21) are clamped to the outer wall of the fluid pipe.

2. The non-contact ultrasonic flow meter according to claim 1, characterized in that, The clamping part (31) is provided with a water drop trough (311) arranged along the axial direction. The bottom surface of the water drop trough (311) is inclined to have a low position and a high position.

3. A non-contact ultrasonic flow meter according to claim 2, characterized in that, The clamping part (31) has several circumferential grooves (312) arranged in a linear array along the axial direction.

4. A non-contact ultrasonic flow meter according to claim 3, characterized in that, The clamping member (3) has a connecting hole (33), the first end of the connecting hole (33) is a nozzle (331), the nozzle (331) is located on the inner arc surface of the clamping part (31), and the mounting base (1) is provided with a movable column (13) that extends into the connecting hole (33). The clamping member (3) is driven to slide so that the movable column (13) is located in the connecting hole (33) and slides like a piston.

5. A non-contact ultrasonic flow meter according to claim 4, characterized in that, A contact plate (6) is rotatably disposed inside the circumferential settling tank (312). The first end of the contact plate (6) extends into the nozzle (331). The clamping part (31) and the contact part (21) are clamped to the outer wall of the fluid pipe so that the second end of the contact plate (6) in the default state abuts against the outer wall of the fluid pipe. The nozzle (331) ejects gas to drive the contact plate (6) to reciprocate to abut against the outer wall of the fluid pipe.

6. A non-contact ultrasonic flow meter according to claim 1, characterized in that, The clamping member (3) is symmetrically provided with sliding parts (32), which are vertically slidably disposed on the mounting base (1). The first end of the elastic member (4) abuts against the sliding part (32) to drive the sliding part (32) to slide towards the mounting cover (2).

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