Optical probe rod locking and sealing ultrasonic time difference method sensor

Abstract

The utility model discloses an optical probe rod locking and sealing ultrasonic time-difference method sensor, and relates to the technical field of ocean current detection, the optical probe rod locking and sealing ultrasonic time-difference method sensor is provided with a connector, a first connecting frame, a second connecting frame and a third connecting frame, and the connector is clamped and fixed with an ultrasonic sensor main body; the optical probe rod body can be locked and fixed, the first optical fiber ultrasonic generating head and the first ultrasonic receiver are arranged in the vertical direction to detect the flow speed, the second optical fiber ultrasonic generating head and the second ultrasonic receiver are arranged in the horizontal direction to detect the flow speed, and in order to avoid ultrasonic interference, the optical probe rod body can be locked and fixed. The first optical fiber ultrasonic generating head and the second optical fiber ultrasonic generating head can be opened in a staggered mode to detect the ocean flow velocity at the same position, comprehensive flow velocity detection is conducted in the vertical direction and the horizontal direction respectively, the detection result is more accurate, interference of external factors is avoided in the detection process, and normal flowing of the ocean is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of ocean current detection, in particular to an ultrasonic time difference method sensor with a light probe rod locked and sealed. Background Art

[0002] At present, in order to detect the flow velocity of the ocean, flow velocity sensors are usually used for detection. The existing flow velocity sensor detection method is generally calculated using the ultrasonic time difference method, which can improve the flow measurement accuracy and measurement range. However, the existing flow velocity sensor only has one detection position and the detection result is relatively simple.

[0003] For example, the utility model with patent number CN202311647851.0 discloses a photo-ultrasonic current sensor based on the continuous time difference method and its measurement method. The current sensor includes a base and a sealed cabin connected to the bottom of the base. A fiber optic ultrasonic transmitter is arranged in the center of the upper surface of the base. Four hollow support claws are evenly arranged around the base. An ultrasonic receiver is installed at the end of each hollow support claw. The four ultrasonic receivers and the fiber optic ultrasonic transmitter form a regular tetrahedron structure. The fiber optic ultrasonic transmitter is the vertex of the regular tetrahedron; an electronic compass, a battery pack and a signal processor are installed in the sealed cabin. A watertight connector is provided at the tail of the sealed cabin for connecting external cables; the optical fiber connected to the fiber optic ultrasonic transmitter passes through the bottom of the sealed cabin. The present invention has a reasonable structural design, convenient control, and flexible operation. It improves the real-time, efficiency and accuracy of flow measurement. It has low requirements on the working environment and is suitable for more application scenarios. It has huge market prospects.

[0004] The sensor in this patent can only emit ultrasonic waves in the vertical direction to detect flow velocity, and cannot perform more comprehensive flow velocity detection of ocean flow velocity in both vertical and horizontal directions. The detection is not comprehensive enough, and the optical probe rod is easy to fall off, affecting the detection results. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an ultrasonic time-difference method sensor with a light probe rod locked and sealed, which solves the problem that the light probe rod is easy to fall off and affects the detection result.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a light probe rod locking and sealing ultrasonic time difference method sensor, including an ultrasonic sensor body, a first fixed head is fixedly installed on the upper end of the ultrasonic sensor body, a second fixed head corresponding to the first fixed head is arranged on the side of the first fixed head, a first optical fiber ultrasonic generator head is fixedly installed on the first fixed head and the second fixed head, a first connecting frame is fixedly installed between the first fixed head and the second fixed head, a second connecting frame is fixedly installed on the outside of the first fixed head, and a third connecting frame is fixedly installed on the outside of the second fixed head, a first ultrasonic receiver is fixedly installed on the top of the first connecting frame, the second connecting frame and the third connecting frame, a second optical fiber ultrasonic generator head is arranged on one side of the second connecting frame and the third connecting frame, and a second ultrasonic receiver is arranged on the other side of the second connecting frame and the third connecting frame, a connecting head is detachably installed on the lower end of the ultrasonic sensor body, and the light probe rod body is fixedly installed on the lower end of the connecting head.

[0007] Preferably, the second connecting frame and the third connecting frame are distributed bilaterally symmetrically, and the surfaces of the second connecting frame and the third connecting frame are provided with curvature.

[0008] Preferably, a mounting groove is provided at the upper end of the connector, and a connecting seat is provided at the bottom of the mounting groove.

[0009] Furthermore, a connecting optical fiber is fixedly mounted on the upper end of the connecting seat, and evenly distributed positioning grooves are provided on the outer side of the connecting seat.

[0010] Furthermore, a groove corresponding to the connector is formed at the bottom of the ultrasonic sensor body, and a block corresponding to the positioning groove is formed on the inner wall of the groove.

[0011] Preferably, wire threading channels are provided inside the first connecting frame, the second connecting frame and the third connecting frame.

[0012] Beneficial Effects

[0013] The utility model provides an ultrasonic time difference method sensor with a light probe rod locking seal. Compared with the prior art, it has the following beneficial effects:

[0014] The optical probe rod locking and sealing ultrasonic time difference method sensor is provided with a connecting head, a first connecting frame, a second connecting frame and a third connecting frame. The connecting head is engaged and fixed with the ultrasonic sensor body, so that the optical probe rod body can be locked and fixed to prevent it from falling off. Two corresponding groups of flow rate detection positions are provided. The first optical fiber ultrasonic generator head and the first ultrasonic receiver are placed in a relatively vertical direction to detect the flow rate, and the second optical fiber ultrasonic generator head and the second ultrasonic receiver are placed in a horizontal direction to detect the flow rate. In order to avoid ultrasonic interference, the first optical fiber ultrasonic generator head and the second optical fiber ultrasonic generator head can be opened at different times to detect the ocean flow rate at the same position, and comprehensive flow rate detection is performed in the vertical and horizontal directions respectively, so that the detection result is more accurate, and the detection process will not be disturbed by external factors, so that the ocean maintains normal flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the first connecting frame in the utility model;

[0017] Figure 3 It is a structural schematic diagram of the connector in the utility model.

[0018] In the figure: 1. ultrasonic sensor body; 2. first fixed head; 3. second fixed head; 4. first connecting frame; 5. third connecting frame; 6. second connecting frame; 7. first optical fiber ultrasonic generator; 8. second optical fiber ultrasonic generator; 9. second ultrasonic receiver; 10. first ultrasonic receiver; 11. mounting groove; 12. connector; 13. optical probe rod body; 14. connecting seat; 15. connecting optical fiber; 16. positioning groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3The utility model provides a technical solution: a light probe rod locking and sealing ultrasonic time difference method sensor, including an ultrasonic sensor body 1, a first fixed head 2 is fixedly installed on the upper end of the ultrasonic sensor body 1, a second fixed head 3 corresponding to the first fixed head 2 is arranged on the side of the first fixed head 2, a first optical fiber ultrasonic generating head 7 is fixedly installed on the first fixed head 2 and the second fixed head 3, a first connecting frame 4 is fixedly installed between the first fixed head 2 and the second fixed head 3, a second connecting frame 6 is fixedly installed on the outer side of the first fixed head 2, and a third connecting frame 5 is fixedly installed on the outer side of the second fixed head 3, and a threading channel is opened inside the first connecting frame 4, the second connecting frame 6 and the third connecting frame 5, and the first connecting frame 4, the second connecting frame 6 and the third connecting frame 5 are provided with a threading channel. A first ultrasonic receiver 10 is fixedly installed on the top of the second connecting frame 6 and the third connecting frame 5, a second optical fiber ultrasonic head 8 is arranged on one side of the second connecting frame 6 and the third connecting frame 5, and a second ultrasonic receiver 9 is arranged on the other side of the second connecting frame 6 and the third connecting frame 5. The first optical fiber ultrasonic head 7 and the first ultrasonic receiver 10 are in a relatively vertical direction to detect the flow velocity, and the second optical fiber ultrasonic head 8 and the second ultrasonic receiver 9 are in a horizontal direction to detect the flow velocity. A connector 12 is detachably installed at the lower end of the ultrasonic sensor body 1, and a light probe rod body 13 is fixedly installed at the lower end of the connector 12. By setting the connector 12, the light probe rod body 13 can be fixed on the ultrasonic sensor body 1.

[0021] The second connecting frame 6 and the third connecting frame 5 are symmetrically distributed, and the surfaces of the second connecting frame 6 and the third connecting frame 5 are provided with an arc. A mounting groove 11 is provided at the upper end of the connecting head 12, and a connecting seat 14 is provided at the bottom of the mounting groove 11. A connecting optical fiber 15 is fixedly installed at the upper end of the connecting seat 14, and evenly distributed positioning grooves 16 are provided on the outer side of the connecting seat 14. A groove corresponding to the connecting head 12 is provided at the bottom of the ultrasonic sensor body 1, and a card block corresponding to the positioning groove 16 is provided on the inner wall of the groove. By providing the mounting groove 11, the connecting seat 14 can be wrapped inside to form a sealing barrier to prevent the ocean current from penetrating into the interior of the ultrasonic sensor body 1. Through the mutual cooperation between the positioning groove 16 and the card block, the connecting seat 14 can be clamped at the bottom of the ultrasonic sensor body 1, and the positioning and installation are very convenient.

[0022] During operation, first snap the connector 12 into place and fix it with the ultrasonic sensor body 1. After fixation, install the entire sensor at the required location, and insert the device into the seawater. Place the first optical fiber ultrasonic head 7 and the first ultrasonic receiver 10 in a relatively vertical direction to detect the flow velocity, and place the second optical fiber ultrasonic head 8 and the second ultrasonic receiver 9 in a horizontal direction to detect the flow velocity. In order to avoid ultrasonic interference, the first optical fiber ultrasonic head 7 and the second optical fiber ultrasonic head 8 can be opened at different times to detect the ocean flow velocity at the same location, and conduct comprehensive flow velocity detection in the vertical and horizontal directions respectively, so that the detection result is more accurate, and the detection process will not be disturbed by external factors, so that the ocean maintains normal flow.

[0023] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An optical probe locking and sealing ultrasonic transit-time method sensor, comprising an ultrasonic sensor body (1), characterized in that: A first fixed head (2) is fixedly mounted on the upper end of the ultrasonic sensor body (1); a second fixed head (3) corresponding to the first fixed head (2) is arranged on the side of the first fixed head (2); a first optical fiber ultrasonic generator (7) is fixedly mounted on the first fixed head (2) and the second fixed head (3); a first connecting frame (4) is fixedly mounted between the first fixed head (2) and the second fixed head (3); a second connecting frame (6) is fixedly mounted on the outer side of the first fixed head (2); a third connecting frame (5) is fixedly mounted on the outer side of the second fixed head (3); a first ultrasonic receiver (10) is fixedly mounted on the top of the first connecting frame (4), the second connecting frame (6) and the third connecting frame (5); a second optical fiber ultrasonic generator (8) is arranged on one side of the second connecting frame (6) and the third connecting frame (5); a second ultrasonic receiver (9) is arranged on the other side of the second connecting frame (6) and the third connecting frame (5); a connecting head (12) is detachably mounted on the lower end of the ultrasonic sensor body (1); a light probe rod body (13) is fixedly mounted on the lower end of the connecting head (12).

2. The optical probe rod locking and sealing ultrasonic time difference method sensor according to claim 1 is characterized in that: The second connecting frame (6) and the third connecting frame (5) are distributed in a bilaterally symmetrical manner, and the surfaces of the second connecting frame (6) and the third connecting frame (5) are provided with arcs.

3. The optical probe rod locking and sealing ultrasonic transit time method sensor according to claim 1, characterized in that: The upper end of the connector (12) is provided with a mounting groove (11), and the bottom of the mounting groove (11) is provided with a connecting seat (14).

4. The optical probe rod locking and sealing ultrasonic time difference method sensor according to claim 3 is characterized in that: A connecting optical fiber (15) is fixedly mounted on the upper end of the connecting seat (14), and evenly distributed positioning grooves (16) are provided on the outer side of the connecting seat (14).

5. The optical probe rod locking and sealing ultrasonic transit time method sensor according to claim 4, characterized in that: A groove corresponding to the connector (12) is provided at the bottom of the ultrasonic sensor body (1), and a block corresponding to the positioning groove (16) is provided on the inner wall of the groove.

6. The optical probe rod locking and sealing ultrasonic time difference method sensor according to claim 1, characterized in that: The first connecting frame (4), the second connecting frame (6) and the third connecting frame (5) are provided with wire threading channels therein.

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