Ultrasonic flow metering instrument

Abstract

The utility model belongs to the technical field of ultrasonic flow metering, and particularly relates to an ultrasonic flow metering instrument. The device comprises two groups of circular ring frames, metering instruments are installed on the circular ring frames, through holes are formed in the circular ring frames, and movable blocks are arranged in the through holes; a fastening belt sleeves the outer side of the circumference of the movable block; each group of ring frames comprises two semi-ring frames which are of semi-ring structures and are distributed left and right, the semi-ring frames are a first semi-ring frame and a second semi-ring frame in sequence from left to right, the lower end of the first semi-ring frame is hinged to the lower end of the second semi-ring frame, and the upper end of the first semi-ring frame is fixed to the upper end of the second semi-ring frame through a bolt. After the first semicircular ring frame and the second semicircular ring frame enclose the pipeline, the fastening belt is tightened inwards along the outer side of each movable block, and the movable blocks are extruded to move towards the inner side of the circular ring frame and inwards abut against the pipeline for fastening; and according to different inward movement distances of the movable blocks, the device adapts to pipelines with different diameters.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic flow measurement, and particularly relates to an ultrasonic flow measurement instrument. Background Art

[0002] An ultrasonic flowmeter is an instrument that measures the flow rate of a fluid by using the difference in the propagation speed of ultrasonic waves in the fluid. It adopts advanced signal analog processing technology and error correction technology, enabling it to accurately and conveniently measure the flow rate in an industrial field environment. Ultrasonic flowmeters are mainly divided into external clamp type and in-pipe type. Currently, most external clamp type ultrasonic flowmeters are installed by tightening and fixing two semi-circular pipe clamps with bolts. This clamping method is not very flexible, and both installation and disassembly are rather troublesome. Moreover, when replacing it on pipes with different diameters, the pipe clamps need to be replaced, which is quite inconvenient. Content of the Utility Model

[0003] The purpose of the utility model is to provide an ultrasonic flow measurement instrument that can change the size of the clamping area according to different pipe clamping diameters.

[0004] The ultrasonic flow measurement instrument described above includes two groups of circular ring frames for installing ultrasonic probes. The two groups of circular ring frames are arranged symmetrically at intervals front and back. A measurement instrument is installed on the circular ring frames. The circular ring frames are each provided with through holes that are evenly distributed at intervals along the circumference and communicate inside and outside. An active block is independently provided in each through hole. One end of the active block is located inside the circular ring frame, and the other end is located outside the circular ring frame.

[0005] An annular fastening belt is sleeved on the outer circumference surrounded by the active blocks. When the circular ring frames are installed on the pipe, the fastening belt drives the active blocks to tightly fasten the pipe inward.

[0006] Each group of circular ring frames includes two semi-circular ring frames that are distributed left and right and have a semi-circular ring structure. The semi-circular ring frames are the first semi-circular ring frame and the second semi-circular ring frame in sequence from left to right. The lower ends of the first semi-circular ring frame and the second semi-circular ring frame are hinged, and the upper ends of the first semi-circular ring frame and the second semi-circular ring frame are fixed by bolts.

[0007] After the first semi-circular ring frame and the second semi-circular ring frame embrace the pipe, they are fixed by bolts. The fastening belt tightens inward along the outer sides of the respective active blocks, squeezing the active blocks to move inward towards the inside of the circular ring frame and pressing inward against the pipe for fastening. According to the different distances that the active blocks move inward, pipes with different diameters can be adapted. The installation is convenient. Through the transmission and reception of ultrasonic waves by the ultrasonic probes fixed on the front and back two groups of circular ring frames, ultrasonic flow measurement is realized, and then data processing and display are carried out through the measurement instrument.

[0008] Furthermore, an arc-shaped block is installed at one end of the active block located inside the circular ring frame.

[0009] The arc-shaped block fits the pipeline better.

[0010] Furthermore, the arc-shaped block is a roller.

[0011] Furthermore, a hinge rod is provided between the two groups of ring frames;

[0012] The front end of the hinge rod hinges the first half ring frame and the second half ring frame located on the front side together, and the rear end hinges the first half ring frame and the second half ring frame located on the rear side together.

[0013] By hinging the first half ring frames and the second half ring frames of the front and rear two groups of ring frames together respectively, the distance between the front and rear two groups of ring frames and the relative positions between the two probes are fixed. No matter the size and position of the pipeline to be measured, the ring frames can be installed for measurement after being installed. It not only realizes hinging, but also can fix the probes, which is convenient for disassembly and installation, and at the same time adapts to different pipeline measurements.

[0014] Furthermore, a connecting rod is provided between the front and rear two groups of ring frames;

[0015] The front end of the connecting rod is detachably connected to the ring frame located on the front side, and the rear end is detachably connected to the ring frame located on the rear side;

[0016] A buckle that can be stuck on the connecting rod is installed on the measuring instrument.

[0017] By buckling the measuring instrument on the connecting rod with the buckle, it is convenient to remove and place the measuring instrument. The detachably connected connecting rod can be installed or not according to needs, and the use is flexible.

[0018] Furthermore, the buckle is a snap ring.

[0019] The snap ring is convenient to pick up.

[0020] Furthermore, the bolt is a plum blossom hand-tightening bolt.

[0021] The plum blossom hand-tightening bolt is convenient for installing the first half ring frame and the second half ring frame when there are no tools at hand.

[0022] Furthermore, the through hole is a countersunk hole, and one end of the movable block located outside the ring frame is larger than the other end.

[0023] The countersunk hole is convenient for the installation of the movable block. One end of the movable block located outside the ring frame is larger than the other end to prevent the movable block from slipping out from the inner side of the ring frame, which is convenient for storage.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] After the first semi-circular ring frame and the second semi-circular ring frame embrace the pipeline, the fastening belt tightens inward along the outer sides of the respective movable blocks, squeezing the movable blocks to move inward towards the inner side of the ring frame and pressing inward against the pipeline for fastening; according to the different distances that the movable blocks move inward, pipelines with different diameters can be adapted. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of an ultrasonic flow meter;

[0027] Figure 2 is Figure 1 the left view of

[0028] Figure 3 is Figure 1 the schematic structural diagram of the first semi-circular ring frame in

[0029] Figure 4 is Figure 3 the left view of

[0030] Figure 5 is Figure 1 the schematic structural diagram of the second semi-circular ring frame in

[0031] Figure 6 is Figure 5 the right view of

[0032] Figure 7 is Figure 1 the schematic structural diagram of the movable block in

[0033] Figure 8 is Figure 7 the bottom view of

[0034] Figure 9 is Figure 1 the schematic structural diagram of the flow meter in

[0035] Figure 10 is Figure 9 the bottom view of

[0036] Figure 11 is Figure 2 the front view of the articulated rod in

[0037] Figure 12 is Figure 1 the schematic structural diagram of the roller in

[0038] Figure 13 is Figure 2 the perspective view of

[0039] Figure 14 is a schematic structural diagram when an ultrasonic flow meter is installed.

[0040] Names of each component in the figure: 1. First semi-circular ring frame; 2. Second semi-circular ring frame; 3. Movable block; 4. Roller; 5. Fastening belt; 6. Measuring instrument; 7. Bolt; 8. Connecting rod; 9. Hinged rod. Specific implementation mode

[0041] The following further illustrates the present utility model through specific embodiments in conjunction with the accompanying drawings, but it is not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present invention. Embodiment

[0042] The following materials are adopted in this embodiment:

[0043] Prepare 6061 aluminum alloy and cast and process two first semi-circular ring frames 1. As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the structure of the first semi-circular ring frame 1 is a semi-circular ring structure, and three square counterbore holes are evenly spaced along the circumference on its side wall, and the quantity can also be changed according to needs. As Figure 3 shown, a hinge hole is processed at the lower end of the first semi-circular ring frame 1, a groove communicating up and down is processed on the end face at the upper end, and threaded holes communicating front and back are processed on the front and back side walls of the groove; a deep notch is milled at a suitable position on one of the first semi-circular ring frames 1 as a slot for inserting an ultrasonic probe.

[0044] Prepare 6061 aluminum alloy and cast and process the second semi-circular ring frame 2. As Figure 5 and Figure 6 shown, the main structure of the second semi-circular ring frame 2 is the same as that of the first semi-circular ring frame 1. As Figure 5 shown, the upper end of the second semi-circular ring frame 2 is milled thin so that it can be embedded into the upper groove of the first semi-circular ring frame 1, and fixing holes communicating front and back are processed corresponding to the positions of the threaded holes, and a groove is milled at the lower end and a hinge hole is processed; a deep notch is milled at a suitable position on one of the second semi-circular ring frames 2 as a slot for inserting an ultrasonic probe.

[0045] Prepare 6061 aluminum alloy blocks and process the same number of movable blocks 3 as the through holes through cutting and milling. As Figure 7 and Figure 8 shown, the sides of the movable blocks 3 are all arc surfaces. As Figure 8 shown, the transverse length of the movable blocks 3 is the same as the radius of the first semi-circular ring frame 1 and the second semi-circular ring frame 2. As Figure 8 shown, a groove is milled at the right end as the installation groove for the roller 4. As Figure 8 shown, the movable blocks 3 are milled so that a convex flange is formed on the left side. Subsequently, as Figure 7 shown, a ring groove for the fastening belt 5 is milled on the flange.

[0046] Prepare a SUS304 stainless steel plate and 4 snap rings, as Figure 9 and 10 shown. The structure of the measuring instrument 6 is a cuboid housing with components such as a built-in circuit board, and four snap rings are welded at its bottom.

[0047] Prepare 6061 aluminum alloy to machine the roller 4. As Figure 12 shown, the roller comes with a rotating shaft.

[0048] Prepare a plum blossom hand-tightening bolt as the bolt 7.

[0049] Prepare 6061 aluminum alloy to machine two connecting rods 8. The connecting rods 8 are cylinders.

[0050] Prepare 6061 aluminum alloy to machine a hinge rod 9. As Figure 11 shown, both ends of the hinge rod 9 are stepped cylinders.

[0051] The assembly method of the above materials is as follows:

[0052] Step 1: Connect the corresponding ends of the first half ring frame 1 and the second half ring frame 2 and then insert the hinge rod 9 for movable riveting. Fix the upper ends of the first half ring frame 1 and the second half ring frame 2 with the bolt 7 to form a complete ring.

[0053] Step 2: Insert the movable block 3 into the square counterbore holes on the sides of the first half ring frame 1 and the second half ring frame 2.

[0054] Step 3: Install the roller 4 into the roller installation groove of the movable block 3.

[0055] Step 4: Assemble another set of ring frames in the same way as the above steps.

[0056] Step 5: Align the ring frames on both sides and connect the two ends of the connecting rod 8 to the two ring frames respectively through bolts.

[0057] Step 6: Put on the fastening belt 5 on the two sets of ring frames. The fastening belt 5 is embedded in the ring grooves on the sides of the first half ring frame 1 and the second half ring frame 2. The assembled structure is as Figure 13 shown.

[0058] The usage instructions are as follows:

[0059] As Figure 14As shown in the figure, before use, install the two circular ring frames on the pipeline. The fastening belt 5 will make the rollers clamp the pipeline. Insert the ultrasonic probe into the slot of the assembled ultrasonic flowmeter. The two ultrasonic probes form a pair, and the relative positions of the two ultrasonic probes are diagonally opposite, that is, insert one ultrasonic probe into one circular ring frame and insert one ultrasonic probe at the position opposite to it on the other side. Buckle the metering instrument 6 on the connecting rod 8.

[0060] The clamping diameter of this ultrasonic flow metering instrument can be changed and it can also be applicable to pipelines with different diameters connected in two sections. Moreover, the installation is convenient and no other tools are needed to assist in the installation. In addition, if the measurement accuracy is not enough, the accuracy can also be improved by increasing the number of pairs of ultrasonic probes.

Claims

1. An ultrasonic flow meter, comprising two sets of circular frames for mounting ultrasonic probes, the two sets of circular frames being spaced apart and symmetrically arranged, and a meter (6) being mounted on the circular frames, characterized in that: The circular frame is provided with through holes evenly spaced along the circumference and communicating with each other inside and outside, and each through hole is independently provided with a movable block (3), one end of the movable block (3) is located inside the circular frame, and the other end is located outside the circular frame; An annular fastening belt (5) is sleeved on the outer side of the circle enclosed between the movable blocks (3); when the annular frame is installed on the pipeline, the fastening belt (5) drives the movable blocks (3) to fasten the pipeline inwards; Each group of circular ring frames comprises two semicircular ring frames which are in a semicircular ring structure and are distributed on the left and right. The semicircular ring frames are sequentially a first semicircular ring frame (1) and a second semicircular ring frame (2) from left to right. The lower end of the first semicircular ring frame (1) and the lower end of the second semicircular ring frame (2) are hinged, and the upper end of the first semicircular ring frame (1) and the upper end of the second semicircular ring frame (2) are fixed by bolts (7).

2. The ultrasonic flow meter according to claim 1, characterized in that: An arc block is installed at one end of the movable block (3) located in the circular ring frame.

3. The ultrasonic flow meter according to claim 2, characterized in that: The arc-shaped block is a roller (4).

4. The ultrasonic flow meter according to claim 3, characterized in that: A hinged rod (9) is provided between the two groups of circular ring frames; The front end of the hinged rod (9) hinges the first semicircular ring frame (1) and the second semicircular ring frame (2) located at the front side together, and the rear end hinges the first semicircular ring frame (1) and the second semicircular ring frame (2) located at the rear side together.

5. The ultrasonic flow meter according to claim 4, characterized in that: A connecting rod (8) is provided between the front and rear groups of circular ring frames; The front end of the connecting rod (8) is detachably connected to the circular ring frame located at the front side, and the rear end is detachably connected to the circular ring frame located at the rear side; A buckle that can be clamped on the connecting rod (8) is installed on the metering instrument (6).

6. The ultrasonic flow meter according to claim 5, characterized in that: The buckle is a snap ring.

7. The ultrasonic flow meter according to claim 6, characterized in that: The bolt (7) is a plum blossom hand-tightening bolt.

8. The ultrasonic flow meter according to claim 7, characterized in that: The through hole is a countersunk hole, and one end of the movable block (3) located outside the circular ring frame is larger than the other end.

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