Insertion electromagnetic flowmeter

Abstract

The utility model relates to an insertion type electromagnetic flowmeter, including the plug -in rod, the meter head and the measured pipeline, the measured pipeline be provided with first connecting pipe, be provided with the ball valve on the first connecting pipe, be provided with the first connecting disc on the ball valve, be provided with single -hole anchor on the plug -in rod, the second connecting disc is set up to single -hole anchor outside, be provided with tool clamping piece group between single -hole anchor and the plug -in rod, tool clamping piece group include tool clamping piece, the outside of tool clamping piece is provided with stress release groove, first pressure cover is set up to the top of tool clamping piece group, the third connecting disc is set up to first pressure cover outside, be provided with the pressure ring on first pressure cover one end, be provided with first spring on first pressure cover, the third connecting disc, second connecting disc and first connecting disc all respectively be provided with the screw rod, the screw rod all respectively be provided with first nut. Can carry out the multi -point steady clamping of the plug -in rod of insertion type electromagnetic flowmeter. The utility model is convenient to use, has extensive market prospect.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic flowmeters, specifically to an insertion type electromagnetic flowmeter. Background Technology

[0002] The working principle of an insertion electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. In an electromagnetic flowmeter, the conductive medium inside the measuring tube is equivalent to the conductive metal rod in Faraday's experiment, and two electromagnetic coils at the upper and lower ends generate a constant magnetic field. When a conductive medium flows through, an induced voltage is generated. Two electrodes inside the pipe measure this induced voltage. Insertion electromagnetic flowmeters retain the original advantages of traditional electromagnetic flowmeters and are easier to install than in-line electromagnetic flowmeters. Especially in the retrofitting of older equipment, when the original pipeline does not have a pre-existing installation location for an in-line electromagnetic flowmeter, the insertion electromagnetic flowmeter can be installed by drilling holes in the existing pipeline and installing a connecting device.

[0003] The installation method for an insertion electromagnetic flowmeter involves welding a bypass branch pipe to the outside of the pipe opening and installing a ball valve of the corresponding diameter on the bypass branch pipe. The insertion rod of the insertion electromagnetic flowmeter is then passed through the ball valve and the bypass branch pipe in sequence, so that the bottom end of the insertion rod is deeply embedded in the central axis of the pipe. The insertion rod is then sealed and fixed, thereby ensuring its stability and reducing leakage of the medium being transported in the pipe through the gaps near the insertion rod. For high-pressure media and media with easily changing transport loads, the insertion rod of the insertion electromagnetic flowmeter, deeply embedded in the pipe cavity, causes a throttling effect after the medium passes through the insertion rod, meaning the medium continuously exerts force on the insertion rod. Under conditions where the media transport load is easily changed, the force on the insertion rod of the insertion electromagnetic flowmeter will also change accordingly. For high-pressure media, the insertion rod of the insertion electromagnetic flowmeter throttles the flow, resulting in a greater force exerted on the rod. Current methods for securing insertion electromagnetic flowmeters primarily involve bolts or single-hole anchors and clamps. However, for high-pressure media or media with fluctuating loads, a more stable fixation method for the insertion rod is needed to reduce measurement instability caused by rod vibration. Furthermore, the turbulence in the pipeline, especially with high-pressure media, places higher demands on the insertion rod's fixation. The fixation should allow for multi-directional clamping to maintain stability and improve the stability of the feedback results. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides an insertion electromagnetic flowmeter capable of multi-point stable clamping of the insertion rod of the insertion electromagnetic flowmeter, thereby overcoming the deficiencies in existing technologies.

[0005] The technical solution adopted by this utility model is as follows: an insertion electromagnetic flowmeter, including an insertion rod, a meter head, and a pipe to be measured. A first connecting pipe is provided on the pipe to be measured, and the bottom end of a ball valve is provided on the first connecting pipe. The insertion rod is installed on the ball valve and the first connecting pipe. A first connecting plate is provided on the top end of the ball valve. A single-hole anchor is provided on the insertion rod above the first connecting plate. A second connecting plate is provided on the outside of the single-hole anchor. A tool clamping plate group is provided between the single-hole anchor and the insertion rod. The tool clamping plate group includes at least two tool clamping plates. Each tool clamping plate has a stress relief groove on its outer side. A first pressure sleeve is provided on the insertion rod above the tool clamping plate group. A third connecting plate is provided on the outside of the first pressure sleeve. A pressure ring is provided on one end of the first pressure sleeve near the tool clamping plate group. A first spring is provided on the first pressure sleeve between the pressure ring and the third connecting plate. A lead screw is provided on the third connecting plate, the second connecting plate, and the first connecting plate. A first nut is provided on the lead screws on both sides of the first connecting plate, the lead screws on both sides of the second connecting plate, and the lead screws on both sides of the third connecting plate.

[0006] Preferably, several lead screws are used, and the several lead screws are evenly distributed in a star shape on the outer side of the central axis of the insertion rod. Each lead screw is equipped with a first nut. The insertion rod, the first connecting plate and the ball valve are provided with a second connecting pipe. The insertion rod inside the second connecting pipe is provided with a packing ring. The insertion rod above the packing ring is provided with a sealing packing. The insertion rod above the sealing packing is provided with a second pressure sleeve. The bottom of the sealing packing and the second pressure sleeve are both located inside the second connecting pipe.

[0007] Preferably, a packing pressure plate is provided on the plurality of lead screws, the packing pressure plate is located between the first connecting plate and the second connecting plate, a guide ring is provided on the top of the second pressure sleeve, the packing pressure plate and the guide ring are movably connected, and a second spring, a washer and a second nut are respectively provided on the plurality of lead screws above the packing pressure plate along the direction from near the packing pressure plate to away from the packing pressure plate.

[0008] Preferably, the guide ring adopts an annular structure, and the outer diameter of the guide ring gradually increases as the guide ring approaches the second pressure sleeve. The packing pressure plate adopts an annular structure, and the shape of the bottom of the inner cavity of the packing pressure plate matches the shape of the top of the guide ring.

[0009] Preferably, the tool clamping plate assembly further includes several limiting grooves formed on the tool clamping plates, and limiting rings are provided in the limiting grooves. The limiting rings are made of rubber and have a ring-shaped structure.

[0010] Preferably, the stress relief groove extends along the direction from the top end to the bottom end of the tool clamp, and the width of the stress relief groove near the insertion rod gradually decreases as the stress relief groove gets closer to the insertion rod.

[0011] The beneficial effects of this utility model are as follows: This utility model achieves stress relief grooves on several tool clamps of the tool clamping assembly, with the stress relief grooves extending from the top to the bottom of the tool clamps. This causes the pressure ring and the first pressure sleeve to press the tool clamping assembly tightly under the elastic force provided by the compression of the first spring. Guided by the insertion rod and the single-hole anchor, and with the pressure ring and the first pressure sleeve continuously applying force, several tool clamps of the tool clamping assembly can undergo stress fracture along the corresponding stress relief grooves. This allows the fractured tool clamps to achieve multi-point clamping of the insertion rod. Compared to the traditional method that utilizes the difference between the inscribed circle of the tool clamp and the outer diameter of the insertion rod, resulting in a small contact area between each tool clamp and the insertion rod, this product uses the fractured tool clamps to clamp the insertion rod. The fractured tool clamps fit the outer diameter of the insertion rod more closely, thus providing better clamping stability.

[0012] This utility model has a simple structure, is easy to operate, and has an ingenious design. It has good social and economic benefits and is a product that is easy to promote and use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 for Figure 1 A magnified view of detail A.

[0015] Figure 3 This is a structural schematic diagram of the component of this utility model. Detailed Implementation

[0016] like Figures 1 to 3As shown, an insertion electromagnetic flowmeter includes an insertion rod 1, a meter head 2, and a measured pipe 3. A first connecting pipe 4 is provided on the measured pipe 3, and the bottom end of a ball valve 5 is provided on the first connecting pipe 4. The insertion rod 1 is mounted on the ball valve 5 and the first connecting pipe 4. A first connecting plate 6 is provided on the top end of the ball valve 5. A single-hole anchor 7 is provided on the insertion rod 1 above the first connecting plate 6. A second connecting plate 8 is provided on the outside of the single-hole anchor 7. A tool clamping plate assembly is provided between the single-hole anchor 7 and the insertion rod 1. The tool clamping plate assembly includes at least two tool clamping plates 9, and each tool clamping plate 9 has a stress-reducing groove on its outer side. The stress relief groove 10 is provided with a first pressure sleeve 11 on the insertion rod 1 above the tool clamping plate assembly. A third connecting plate 12 is provided on the outer side of the first pressure sleeve 11. A pressure ring 13 is provided on the end of the first pressure sleeve 11 near the tool clamping plate assembly. A first spring 14 is provided on the first pressure sleeve 11 between the pressure ring 13 and the third connecting plate 12. A lead screw 15 is provided on the third connecting plate 12, the second connecting plate 8, and the first connecting plate 6. A first nut 16 is provided on the lead screw 15 on both sides of the first connecting plate 6, the second connecting plate 8, and the third connecting plate 12. Furthermore, the stress relief groove 10 extends from the top end of the tool clamping plate 9 to the bottom end of the tool clamping plate 9. The width of the stress relief groove 10 near the insertion rod 1 gradually decreases as the stress relief groove 10 gets closer to the insertion rod 1. Therefore, after the first spring 14 is compressed, the first pressure sleeve 11 and pressure ring 13, under the elastic force provided by the first spring 14, force several tool clamps 9 in the tool clamping piece group to gradually penetrate into the gap between the insertion rod 1 and the single-hole anchor 7. Guided by the insertion rod 1 and the single-hole anchor 7, the tool clamps 9 undergo stress fracture along the opening direction of the stress relief groove 10, thereby using the fractured tool clamps 9 to clamp the insertion rod 1 at multiple points. More preferably, the cross-section of the stress relief groove 10 near the insertion rod 1 is triangular; this facilitates the tool clamps 9 to fracture along the opening direction of the stress relief groove 10 after being subjected to stress. Furthermore, the tool clamping piece group also includes several limiting grooves on the tool clamps 9, and limiting rings 26 are provided in the limiting grooves. The limiting rings 26 are ring-shaped structures made of rubber. This facilitates the use of the limiting rings 26 to maintain the relative positions between the tool clamps 9.

[0017] Several lead screws 15 are arranged in a star shape and evenly distributed outside the central axis of the insertion rod 1. Each lead screw 15 is equipped with a first nut 16. A second connecting pipe 17 is provided on the insertion rod 1, the first connecting disc 6, and the ball valve 5. A packing ring 18 is provided on the insertion rod 1 inside the second connecting pipe 17. The packing ring 18 is a ring structure made of woven graphite. A sealing packing 19 is provided on the insertion rod 1 above the packing ring 18. The installation of the sealing packing 19 helps to reduce the gap between the second connecting pipe 17 and the insertion rod 1. A second pressure sleeve 20 is provided on the insertion rod 1 above the sealing packing 19. The bottoms of both the sealing packing 19 and the pressure sleeve 20 are located inside the second connecting pipe 17. The installation of the second pressure sleeve 20 allows the sealing packing 19 to be compressed by moving the second pressure sleeve 20 under the limitation of the packing ring 18, thereby deforming the sealing packing 19 and further reducing the gap between the second connecting pipe 17 and the insertion rod 1. Furthermore, several lead screws 15 are equipped with packing pressure plates 21, located between the first connecting disc 6 and the second connecting disc 8. A guide ring 22 is provided at the top of the second pressure sleeve 20. The packing pressure plates 21 and the guide ring 22 are movably connected. Several lead screws 15 above the packing pressure plates 21 are sequentially equipped with second springs 23, washers 24, and second nuts 25 along the direction from near to far from the packing pressure plates 21. This allows the elastic force provided by the several second springs 23 to keep the packing pressure plates 21 applying force to the second pressure sleeve 20 via the guide rings 22, thereby keeping the sealing packing 19 in a compressed state. Furthermore, the guide ring 22 has a ring-shaped structure, and its outer diameter gradually increases as it approaches the second pressure sleeve 20. The packing pressure plates 21 also have a ring-shaped structure, and the shape of the bottom of the inner cavity of the packing pressure plates 21 matches the shape of the top of the guide ring 22. The insertion rod 1 is provided with a marking line 27, which extends along the direction from near the meter head 2 to away from the meter head 2. The second connecting plate 8 outside the marking line 27 is provided with a marking block 28. The width of the marking block 28 gradually decreases as the marking block 28 moves away from the second connecting plate 8, thereby facilitating feedback on whether the installation direction of the insertion rod 1 has reached the preset range.

[0018] The instructions for using this product are as follows: Figures 1 to 3As shown, a hole is drilled in the pipe 3 to be tested, and a first connecting pipe 4 and a ball valve 5 are installed on the outside of the drilled position. Then, the insertion rod 1 is passed through the ball valve 5 and inserted into the pipe 3 to a predetermined depth. Next, the sealing packing 19, the second pressure sleeve 20, the packing pressure plate 21, the single-hole anchor 7, the first pressure sleeve 11, the first spring 14, and the third connecting plate 12 are installed on the insertion rod 2. Then, the lead screw 15 is installed, and the first nut 16 is installed on the lead screw 15, thereby installing the second connecting plate 8 and the third connecting plate 12 into the predetermined position range. Next, the direction of the insertion rod 1 is further precisely adjusted, and the insertion rod 2 is rotated until the marking line 27 reaches the predetermined position of the marking block 28; then the insertion depth of the insertion rod 1 is precisely adjusted until the insertion rod 1 reaches the specified depth. Next, by adjusting the position of the third connecting plate 12, the first spring 14 is compressed to a preset state, causing each of the tool clamps 9 in the tool clamp assembly to fracture along the stress relief groove 10 on the tool clamp 9 and clamp the insertion rod 1 under the limitation of the single-hole anchor 7. Finally, by adjusting the second nut 25 on each lead screw 15, the packing pressure plate 21 receives the elastic force provided by the second spring 23, causing the packing pressure plate 21 to move towards the guide ring 22. This further compresses the sealing packing 19 through the guide ring 22 and the second pressure sleeve 20, causing the sealing packing 19 to deform and seal the insertion rod 1. After completing the above operations, the installation of this product is complete.

[0019] This embodiment achieves the following: stress relief grooves 10 are provided on each of the tool clamps 9 in the tool clamping assembly, and the stress relief grooves 10 extend from the top end to the bottom end of the tool clamps 9. Under the elastic force provided by the compression of the first spring 14, the pressure ring 13 and the first pressure sleeve 11 are pressed tightly against the tool clamping assembly. Under the guidance of the insertion rod 1 and the single-hole anchor 7, the pressure ring 13 and the first pressure sleeve 11 continuously apply force, and the tool clamps 9 in the tool clamping assembly can undergo stress fracture along the corresponding stress relief grooves 10. This allows the fractured tool clamps 9 to achieve multi-point clamping of the insertion rod 1. Compared with the traditional method of using the difference between the inner circle of the tool clamp 9 and the outer diameter of the insertion rod 1, which results in a small contact area between each tool clamp 9 and the insertion rod 1, this product uses the fractured tool clamps 9 to clamp the insertion rod 1. The fractured tool clamps 9 fit the outer diameter of the insertion rod 1 more closely, thus providing better clamping stability.

[0020] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. An insertion-type electromagnetic flowmeter, comprising an insertion rod (1), a meter head (2), and a pipe to be measured (3), characterized in that: The tested pipe (3) is provided with a first connecting pipe (4), and the bottom end of a ball valve (5) is provided on the first connecting pipe (4). An insertion rod (1) is installed on the ball valve (5) and the first connecting pipe (4). A first connecting plate (6) is provided on the top of the ball valve (5). A single-hole anchor (7) is provided on the insertion rod (1) above the first connecting plate (6). A second connecting plate (8) is provided on the outside of the single-hole anchor (7). A tool clamping plate group is provided between the single-hole anchor (7) and the insertion rod (1). The tool clamping plate group includes at least two tool clamping plates (9). Each tool clamping plate (9) has a stress relief groove (10) on its outer side. The insertion rod (1) above the tool clamping plate group is provided with a first connecting plate (6). A first pressure sleeve (11) is provided on the insert rod (1). A third connecting plate (12) is provided on the outside of the first pressure sleeve (11). A pressure ring (13) is provided on one end of the first pressure sleeve (11) near the tool clamping plate group. A first spring (14) is provided on the first pressure sleeve (11) between the pressure ring (13) and the third connecting plate (12). A lead screw (15) is provided on the third connecting plate (12), the second connecting plate (8) and the first connecting plate (6). A first nut (16) is provided on the lead screw (15) on both sides of the first connecting plate (6), the lead screw (15) on both sides of the second connecting plate (8) and the lead screw (15) on both sides of the third connecting plate (12).

2. The insertion electromagnetic flowmeter according to claim 1, characterized in that: The aforementioned lead screw (15) is a plurality of such lead screws (15) are evenly distributed in a star shape on the outer side of the central axis of the insertion rod (1). Each lead screw (15) is equipped with a corresponding first nut (16). The insertion rod (1), the first connecting plate (6) and the ball valve (5) are provided with a second connecting pipe (17). The insertion rod (1) inside the second connecting pipe (17) is provided with a packing ring (18). The insertion rod (1) above the packing ring (18) is provided with a sealing packing (19). The insertion rod (1) above the sealing packing (19) is provided with a second pressure sleeve (20). The bottom of the sealing packing (19) and the second pressure sleeve (20) are both located inside the second connecting pipe (17).

3. The insertion electromagnetic flowmeter according to claim 2, characterized in that: A packing pressure plate (21) is provided on several screw rods (15). The packing pressure plate (21) is located between the first connecting plate (6) and the second connecting plate (8). A guide ring (22) is provided on the top of the second pressure sleeve (20). The packing pressure plate (21) and the guide ring (22) are movably connected. A second spring (23), a washer (24), and a second nut (25) are respectively provided on several screw rods (15) above the packing pressure plate (21) along the direction from close to the packing pressure plate (21) to away from the packing pressure plate (21).

4. The insertion electromagnetic flowmeter according to claim 3, characterized in that: The guide ring (22) adopts a ring structure. The outer diameter of the guide ring (22) gradually increases as the guide ring (22) gets closer to the second pressure sleeve (20). The packing pressure plate (21) adopts a ring structure. The shape of the bottom of the inner cavity of the packing pressure plate (21) matches the shape of the top of the guide ring (22).

5. The insertion electromagnetic flowmeter according to claim 1, characterized in that: The tool clamping plate group also includes several tool clamping plates (9) with limiting grooves, and limiting rings (26) are provided in the limiting grooves. The limiting rings (26) are made of rubber.

6. The insertion electromagnetic flowmeter according to claim 1, characterized in that: The stress relief groove (10) extends from the top end of the tool clamp (9) to the bottom end of the tool clamp (9), and the width of the stress relief groove (10) near the insertion rod (1) gradually decreases as the stress relief groove (10) gets closer to the insertion rod (1).

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