External clamping type ultrasonic flow sensor clamp

Abstract

The utility model relates to an external clamping type ultrasonic flow sensor clamp which comprises a main frame, an auxiliary frame, a guide rod and a fastening belt. The main frame and the auxiliary frame are each of an n-shaped structure, and guide grooves are formed in the two sides of the exterior of each n-shaped structure. The guide rods are inserted into the guide grooves in the main frame and the auxiliary frame respectively, one end of each guide rod is fixedly connected with the guide groove of the main frame, and the auxiliary frame can slide along the guide rods; scales are arranged on the guide rod; openings of the main frame and the auxiliary frame are arranged on a pipeline to be tested in a riding mode and are connected with the pipeline to be tested through fastening belts. The sensors are arranged in the main frame and the auxiliary frame respectively and are fixed through bolts in an abutting mode. The clamp can solve the problems of inaccurate positioning and inconvenient installation of the existing installation mode.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic flow sensor installation, in particular to an external clamping type ultrasonic flow sensor clamp. Background Art

[0002] The external clamping type ultrasonic flow sensor is a non-contact measuring instrument. Based on the acoustic Doppler effect, it is mainly used to measure the flow rate of various single uniform liquids that can conduct ultrasonic waves, and has a wide range of applications in various fields such as chemical industry, metallurgy, medicine, water supply, etc. It can not only measure the flow rate of media with large pipe diameters, but also be used to measure media that are not easy to contact and observe. The ultrasonic flow sensor is fixed on the pipeline to be measured and used in cooperation with the signal processing device to measure the flow velocity of the fluid. The basic principle of the ultrasonic sensor working is that a pair of ultrasonic sensors are respectively installed upstream and downstream of the fluid to be measured, and the transmitting surfaces of the two ultrasonic sensors face each other and alternately transmit and receive pulse signals. The signal processing device calculates the flow velocity of the fluid by measuring the difference in the velocities of ultrasonic pulses propagating in the downstream and upstream directions over a known distance.

[0003] Currently, when installing an external clamping type ultrasonic flow sensor, one sensor is directly fixed on the pipeline with a strap, then the distance is measured with a ruler, and then another sensor is fixed with a strap. The disadvantages of the existing installation method are as follows: it cannot ensure that the central plane of the two sensors and the axis of the pipeline to be measured are in the same plane; the method of measuring the distance with a ruler first and then installing another sensor easily leads to inaccurate spacing; and the existing installation method is inconvenient to operate. Summary of the Invention

[0004] The utility model provides an external clamping type ultrasonic flow sensor clamp, which can solve the problems of inaccurate positioning and inconvenient installation of the existing installation method.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An external clamping type ultrasonic flow sensor clamp includes a main frame, a sub-frame, guide rods and fastening straps; both the main frame and the sub-frame are in a Π-shaped structure, and guide grooves are provided on both outer sides of the Π-shaped structure; the guide rods are respectively inserted into the guide grooves on the main frame and the sub-frame, one end of the guide rod is fixedly connected to the guide groove of the main frame, and the sub-frame can slide along the guide rod; scales are provided on the guide rods; the openings of the main frame and the sub-frame straddle the pipeline to be measured and are both connected to the pipeline to be measured through fastening straps; the sensors are respectively arranged inside the main frame and the sub-frame and are fixed by bolts in a pressing manner.

[0007] An arc is provided along the inner edge of the opening of the Π-shaped structure.

[0008] Windows are provided on both sides of the Π-shaped structure.

[0009] A retaining rod is fixedly arranged on one end face of the Π-shaped structure, and a wire-avoiding notch is provided at the top of the other end. The retaining rods of the main frame and the sub-frame are relatively positioned on the pipeline to be measured.

[0010] Threaded holes are provided at the top and both sides of the Π-shaped structure, and the sensor is tightly fixed by bolts cooperating with the threaded holes.

[0011] A groove is provided on the outer top surface of the Π-shaped structure, and the fastening belt fixes the main frame and the sub-frame on the pipeline to be measured through the groove.

[0012] One end of the guiding rod is connected to the guiding groove of the main frame by screws.

[0013] An external clamping ultrasonic flow sensor fixture further includes a baffle; the baffle is arranged on both sides of the Π-shaped structure and can cover the guiding groove, and the baffle is fixed to the Π-shaped structure by bolts.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1) In the present utility model, the openings of the main frame and the sub-frame straddle the pipeline to be measured, and the sub-frame slides along the guiding rod. Therefore, it can be ensured that the central planes of the main frame and the sub-frame are in the same plane as the axis of the pipeline to be measured, that is, it can be ensured that the central plane of the sensor is in the same plane as the axis of the pipeline to be measured.

[0016] 2) Windows are provided on both sides of the Π-shaped structure in the present utility model. On the one hand, it is beneficial for heat dissipation, and on the other hand, it is beneficial for observing the installation condition of the sensor.

[0017] 3) A retaining rod is fixedly arranged on one end face of the Π-shaped structure in the present utility model. When the sensor is inserted into the interior of the Π-shaped structure from the side without the retaining rod, the side with the retaining rod can play a limiting role, which is convenient for installation. In addition, a wire-avoiding notch is provided at the top of the Π-shaped structure, which can avoid the wires on the sensor and prevent wire abrasion.

[0018] 4) A groove is provided on the outer top surface of the Π-shaped structure of the present utility model, and the fastening belt fixes the main frame and the sub-frame on the pipeline to be measured through the groove, and the groove can prevent the fastening belt from sliding.

[0019] 5) The baffle of the present utility model is arranged on both sides of the Π-shaped structure and can cover the guiding groove. The baffle plays a limiting role to prevent the guiding rod from tilting and disengaging from the guiding groove. Description of the Drawings

[0020] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0021] Figure 1It is a schematic structural diagram of a clamp for an external clamping type ultrasonic flow sensor of the present utility model.

[0022] Figure 2 It is the front view of a clamp for an external clamping type ultrasonic flow sensor of the present utility model.

[0023] Figure 3 It is a schematic diagram of the main frame or sub-frame structure of the present utility model Figure 1 。

[0024] Figure 4 It is a schematic diagram of the main frame or sub-frame structure of the present utility model Figure 2 。

[0025] Explanation of reference numerals:

[0026] In the figure: 1. Sensor 2. Pipeline to be measured 3. Main frame 4. Sub-frame 5. Guide rod 6. Flap 7. Guide groove 8. Scale 9. Grooved area 10. Arc 11. Window 12. Stop rod 13. Notch for wire avoidance 14. Threaded hole Specific embodiments

[0027] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0028] The following further describes the specific embodiments of the present utility model with reference to the accompanying drawings:

[0029] As Figures 1 to 4 shown, the present utility model provides a clamp for an external clamping type ultrasonic flow sensor, including a main frame 3, a sub-frame 4, a guide rod 5 and a fastening belt. Both the main frame 3 and the sub-frame 4 are in a ∏-shaped structure, and guide grooves 7 are provided on both outer sides of the ∏-shaped structure. The guide rod 5 is respectively inserted into the guide grooves 7 on the main frame 3 and the sub-frame 4. One end of the guide rod 5 is fixedly connected to the guide groove 4 of the main frame 3 by screws, and the sub-frame 4 can slide along the guide rod 5. A scale 8 is provided on the guide rod 5. The openings of the main frame 3 and the sub-frame 4 straddle the pipeline to be measured 2 and are both connected to the pipeline to be measured 2 through the fastening belt. A grooved area 9 is provided on the outer top surface of the ∏-shaped structure, and the fastening belt fixes the main frame 3 and the sub-frame 4 on the pipeline to be measured 2 through the grooved area 9. An arc 10 is provided along the inner edge of the opening of the ∏-shaped structure. Windows 11 are provided on both sides of the ∏-shaped structure, and the windows 11 are beneficial for heat dissipation and weight reduction.

[0030] In the present utility model, a stop rod 12 is fixedly provided on one end surface of the ∏-shaped structure, and a notch for wire avoidance 13 is provided at the top of the other end. The stop rods 12 of the main frame 3 and the sub-frame 4 are opposite in position on the pipeline to be measured 2. The sensor 1 is respectively inserted into the main frame 3 and the sub-frame 4 from the side without the stop rod 12. Threaded holes 14 are provided on the top and both sides of the ∏-shaped structure, and bolts are matched with the threaded holes 14 to tightly fix the sensor 1 from three directions.

[0031] The utility model further includes a baffle 6 which is arranged on both sides of the Π-shaped structure and can cover the guide groove 7. The baffle 6 is fixed to the Π-shaped structure by bolts. The baffle 6 and the guide groove 7 form a semi-closed structure, which can not only play a guiding role but also play a limiting role to prevent the guide rod 5 from disengaging from the guide groove 7. If the guide rod 5 is inclined and disengages from the guide groove 7, the distance adjusted according to the scale 8 on the guide rod will also deviate. (Especially when disengaging from the guide groove 7 on the auxiliary frame 4)

[0032] The working process of the external clamping type ultrasonic flow sensor fixture provided by the utility model is as follows:

[0033] First, insert the guide rods 5 into the guide grooves 7 on the main frame 3 and the auxiliary frame 4 respectively, and the guide rods 5 are fixedly connected to the guide grooves 7 of the main frame 3.

[0034] Then, the openings of the main frame 3 and the auxiliary frame 4 straddle the pipeline 2 to be measured, and the main frame 3 is fastened to the pipeline 2 to be measured by a fastening belt 6; the fastening belt 6 winds around the auxiliary frame 4 and the pipeline 2 to be measured for pre-connection, but is not fastened.

[0035] Secondly, slide the auxiliary frame 4 through the scale 8 on the guide rod to adjust the distance between the main frame 3 and the auxiliary frame 4. After the adjustment is completed, tighten the fastening belt 6 to fasten the auxiliary frame 4.

[0036] Finally, install the sensors 1 into the main frame 3 and the auxiliary frame 4 respectively, and tighten and fix the sensors 1 by bolts.

[0037] The preferred embodiments of the utility model have been described in detail above in conjunction with the accompanying drawings. However, the utility model is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the utility model, various simple modifications can be made to the technical solutions of the utility model, and these simple modifications all fall within the protection scope of the utility model. In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable way without conflict. To avoid unnecessary repetition, the utility model does not separately describe various possible combination methods. In addition, any combination can be made between different embodiments of the utility model as long as it does not violate the idea of the utility model, and it should also be regarded as the content disclosed by the utility model.

Claims

1. An external clamp type ultrasonic flow sensor fixture, characterized in that: It includes a main frame, a sub-frame, a guide rod and a fastening belt; the main frame and the sub-frame are both ∏-shaped structures, and guide grooves are provided on both sides of the outside of the ∏-shaped structure; the guide rods are respectively inserted into the guide grooves on the main frame and the sub-frame, one end of the guide rod is fixedly connected to the guide groove of the main frame, and the sub-frame can slide along the guide rod; the guide rod is provided with a scale; the openings of the main frame and the sub-frame ride on the measured pipeline, and are both connected to the measured pipeline through fastening belts; the sensors are respectively arranged inside the main frame and the sub-frame, and are tightened and fixed by bolts.

2. The external clamp type ultrasonic flow sensor fixture according to claim 1, characterized in that: The inner edge of the ∏-shaped structure opening is provided with a circular arc.

3. The external clamp type ultrasonic flow sensor fixture according to claim 2, characterized in that: Windows are arranged on both sides of the ∏-shaped structure.

4. The external clamp type ultrasonic flow sensor fixture according to claim 3, characterized in that: A stopper is fixedly arranged on one end surface of the ∏-shaped structure, and a wire avoiding notch is arranged on the top of the other end. The stoppers of the main frame and the auxiliary frame are located opposite to each other on the measured pipeline.

5. The external clamp type ultrasonic flow sensor fixture according to claim 1, characterized in that: The top and both sides of the ∏-shaped structure are provided with threaded holes, and bolts cooperate with the threaded holes to tighten and fix the sensor.

6. The external clamp type ultrasonic flow sensor fixture according to claim 1, characterized in that: The outer top surface of the ∏-shaped structure is provided with a belt groove, and the fastening belt fixes the main frame and the auxiliary frame on the measured pipeline through the belt groove.

7. The external clamp type ultrasonic flow sensor fixture according to claim 1, characterized in that: One end of the guide rod is connected to the guide groove of the main frame through a screw.

8. The external clamp type ultrasonic flow sensor fixture according to claim 1, characterized in that: It also includes blocking pieces; the blocking pieces are arranged on both sides of the ∏-shaped structure and can cover the guide grooves, and the blocking pieces are fixed to the ∏-shaped structure by bolts.

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