A flow meter that is easy to install

Abstract

The utility model discloses a flowmeter convenient to installation relates to flowmeter field, the utility model discloses a flowmeter main part is provided with pipeline in the both sides of flowmeter main part, the both sides of flowmeter main part all are provided with flowmeter flange, the one side of flowmeter flange is provided with connecting plate, the one side screw connection of connecting plate is limited to the limit board, the utility model discloses a double casing pipe screw drive and rotation limit structure solve the traditional flange bolt loose problem, the first casing pipe is welded in the pipeline and provides rigid pedestal, and the thread of second casing pipe is screwed and will rotate moment into axial thrust, and the connecting support of bearing support simultaneously will thrust into the continuous pressure of flange connecting plate, make flange bolt pre -tightening force obtain dynamic compensation, secondly, annular limit board forms rigidity mechanical lock -up to connecting plate, and the screw engagement structure allows micron -level displacement adjustment, ensures that the sealing surface pressure is constant, and the firmness of the junction is improved.

Description

Technical Field

[0001] This utility model relates to the field of flow meters, specifically a flow meter that is easy to install. Background Technology

[0002] A flow meter is a key industrial measuring instrument that converts fluid flow into measurable signals based on fluid characteristics such as liquid, gas, steam, conductivity, viscosity, flow range, accuracy requirements, and pipeline conditions. It achieves accurate sensing of flow velocity, volume, or mass flow rate by using principles such as differential pressure, electromagnetic, vortex, ultrasonic, volumetric, turbine, Coriolis, and thermal methods.

[0003] In existing flow meters, the flow meter is connected to the water pipe by bolts and nuts during use. However, after a long period of use, the connection may loosen, affecting the flow meter's measurement and reducing its accuracy. Therefore, the inventor urgently needs to design a device that can fix the connection to improve the stability of the connection. Summary of the Invention

[0004] Therefore, the purpose of this utility model is to provide a flow meter that is easy to install in order to solve the technical problem of insufficient firmness.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flow meter that is easy to install, comprising a flow meter body, pipes provided on both sides of the flow meter body, flow meter flanges provided on both sides of the flow meter body, a connecting plate provided on one side of the flow meter flange, a limit plate threadedly connected to one side of the connecting plate, a connecting bracket fixedly provided on the outer ring of the connecting plate, a first sleeve fixedly connected to the outer ring of the pipes, a second sleeve threadedly connected to the outer ring of the first sleeve, and the outer side of the second sleeve being rotatably connected to the connecting bracket via a bearing.

[0006] By adopting the above technical solution, the assembly of the flow meter body and the pipes on both sides can be quickly positioned through the connecting plate. At the same time, the tightening operation of the first and second sleeves of the double-sleeve threaded mechanism only requires a simple wrench tool, avoiding the high requirements of traditional flanges for hole accuracy. Secondly, the multiple dynamic locking mechanism effectively ensures long-term stability. The second sleeve is connected to the connecting bracket through the bearing, so that the axial locking force can be autonomously compensated with the vibration of the pipeline.

[0007] Furthermore, a pipe flange is provided on one side of the pipe. The pipe flange is a detachable structure and is inserted into the flow meter flange.

[0008] By adopting the above technical solutions, the plug-in flange structure achieves zero-error assembly. The plug-in fit design of the pipeline flange and the flow meter flange allows for angular deviation tolerance. At the same time, the detachable structure allows for maintenance of the flange sealing surface without the need to completely disassemble the pipeline, thus improving maintenance efficiency. Furthermore, the shear resistance is enhanced, and the scientific setting of the plug depth prevents displacement through mechanical interlocking when the pipeline moves axially.

[0009] Furthermore, one side of the connecting plate is provided with several bolts that connect the flow meter flange and the pipe flange.

[0010] By adopting the above technical solution, the through bolt design achieves bidirectional prestressed locking. The bolt simultaneously penetrates the flow meter flange and the pipe flange, and bidirectional compression is generated on the flange gap when the nut is tightened.

[0011] Furthermore, the limiting plate is a ring structure used to limit the position of the connecting plate.

[0012] By adopting the above technical solution, the annular limiting plate constructs a three-dimensional constraint system. Its annular structure circumferentially covers the edge of the connecting plate, while the radial pressure generated by the internal thread engagement cancels out the axial displacement of the connecting plate, thus completely suppressing loosening.

[0013] Furthermore, the first sleeve is made of metal and is fixed to the pipe by welding, and the outer wall of the first sleeve is provided with an external thread structure.

[0014] By adopting the above technical solution, the welded metal sleeve achieves load path optimization. The full weld connection between the first sleeve and the pipeline directly transmits the pipeline load to the threaded locking mechanism. At the same time, the external thread structure converts the tightening torque of the second sleeve into axial thrust.

[0015] Furthermore, a double-layer sealing structure is provided between the pipe flange and the flow meter flange, including an elastic sealing ring disposed in the sealing groove and a sealing strip arranged circumferentially along the flange end face.

[0016] By adopting the above technical solutions, the dual-channel seal constructs an active defense system. The elastic sealing ring achieves primary static sealing of the flange insertion gap, while the circumferential sealing strip generates a self-expansion effect to compensate for micro-leakage when pressure fluctuates.

[0017] Furthermore, the connecting bracket is fixed to the outer ring of the bearing by welding.

[0018] By adopting the above technical solutions, the welding of the bearing outer ring achieves zero-loss torque transmission, and the welding and fixing of the connecting bracket and the bearing eliminates the fitting clearance caused by the traditional key connection, while ensuring that the rotational torque of the second sleeve is completely converted into the flange locking force.

[0019] In summary, the present invention has the following main advantages:

[0020] This utility model solves the problem of loosening of traditional flange bolts by using a double-sleeve threaded transmission and a rotation limiting structure. The first sleeve is welded to the pipeline to provide a rigid base. The thread engagement of the second sleeve converts the rotational torque into axial thrust. At the same time, the bearing-supported connecting bracket converts the thrust into a continuous clamping force on the flange connecting plate, so that the preload of the flange bolts is dynamically compensated. Secondly, the annular limiting plate forms a rigid mechanical lock on the connecting plate. Meanwhile, the threaded engagement structure allows for micron-level displacement adjustment to ensure constant pressure on the sealing surface.

[0021] This utility model significantly improves construction efficiency through modular assembly design. The flow meter and pipeline are pre-positioned by flange insertion, and the welding and fixing of the connecting bracket and bearing realizes the integration of the force transmission path. The threaded engagement of the first sleeve and the second sleeve allows the locking operation to be performed by rotating a single wrench. At the same time, the detachable flange structure supports partial replacement of sealing components. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0024] Figure 3 This is a bottom view of the structure of this utility model;

[0025] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0026] Figure 5 This utility model Figure 1 A magnified structural diagram at point B in the middle.

[0027] In the diagram: 1. Flow meter body; 2. Flow meter flange; 3. Pipe; 4. Pipe flange; 5. Connecting plate; 501. Connecting bracket; 502. Bolt; 6. First sleeve; 7. Second sleeve; 8. Bearing; 9. Limiting plate. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In this embodiment:

[0030] An easy-to-install flow meter, such as Figure 1-5As shown, the flowmeter includes a flowmeter body 1, with pipes 3 on both sides of the flowmeter body 1. Flowmeter flanges 2 are also provided on both sides of the flowmeter body 1. A connecting plate 5 is provided on one side of the flowmeter flange 2. A limit plate 9 is threadedly connected to one side of the connecting plate 5. A connecting bracket 501 is fixedly provided on the outer ring of the connecting plate 5. A first sleeve 6 is fixedly connected to the outer ring of the pipes 3. A second sleeve 7 is threadedly connected to the outer ring of the first sleeve 6. The outer side of the second sleeve 7 is rotatably connected to the connecting bracket 501 through a bearing 8. The assembly of the flowmeter body 1 and the pipes 3 on both sides is quickly positioned by the connecting plate 5. At the same time, the first double sleeve threaded mechanism... The tightening operation of sleeve 6 and second sleeve 7 only requires a simple wrench, avoiding the high requirements for hole precision of traditional flanges. Secondly, the multiple dynamic locking mechanisms effectively ensure long-term stability: the second sleeve 7 is rotatably connected to the connecting bracket 501 through the bearing 8, so that the axial locking force can be self-compensated with the vibration of the pipeline. At the same time, the limiting plate 9 forms a secondary lock on the rigid limiting of the connecting plate 5, completely eliminating the risk of creep loosening of bolt 502. Furthermore, the stress dispersion structure extends the service life of the equipment. The circumferential layout of the connecting bracket 501 makes the pipeline load evenly transferred to the flow meter flange 2, avoiding sealing failure caused by local stress concentration.

[0031] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A pipe flange 4 is installed on one side of pipe 3. Pipe flange 4 is a detachable structure. Pipe flange 4 is plugged into flow meter flange 2. The plug-in flange structure achieves zero-error assembly. The plug-in fit design of pipe flange 4 and flow meter flange 2 allows for angular deviation tolerance. At the same time, the detachable structure allows for maintenance of the flange sealing surface without disassembling the entire pipeline, improving maintenance efficiency. Secondly, the shear resistance is enhanced: the scientific setting of the plug depth prevents displacement through mechanical interlock when the pipeline moves axially. At the same time, the independence of the end face sealing structure effectively isolates the pipeline torsional load. Furthermore, the compatibility is optimized. This detachable structure is compatible with standard flange specifications, and only the sealing ring needs to be replaced to meet the requirements of different pressure levels.

[0032] See Figure 1 , Figure 2 , Figure 3 , Figure 4On one side of the connecting plate 5, there are several bolts 502 that pass through the flow meter flange 2 and the pipe flange 4. The through bolts 502 are designed to achieve bidirectional prestress locking. The bolts 502 pass through the flow meter flange 2 and the pipe flange 4 at the same time. When the nuts are tightened, they exert bidirectional pressure on the flange gap. At the same time, the parallelism error of the flange sealing surface can be automatically corrected by the bolt tension. When a single bolt breaks accidentally, the equidistant distribution of the remaining bolts can still maintain the sealing pressure. Furthermore, the thermal deformation compensation capability is achieved by adjusting the differential expansion coefficient between the bolt material and the flange through the elastic washer, which keeps the sealing surface in continuous and effective contact under high temperature conditions.

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The limiting plate 9 is a ring structure used to limit the position of the connecting plate 5. The ring limiting plate 9 constructs a three-dimensional constraint system. Its ring structure circumferentially covers the edge of the connecting plate 5. The radial pressure generated by the internal thread engagement and the axial displacement of the connecting plate form a vector cancellation, which completely suppresses loosening. At the same time, the fine adjustment function is integrated. The limiting plate 9 allows for precise online adjustment of the flange preload. The knurled design on the outer edge of the limiting plate, together with the mechanical stop pin, prevents accidental rotation and loosening caused by equipment vibration.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The first sleeve 6 is made of metal and is fixed to the pipe 3 by welding. The outer wall of the first sleeve 6 has an external thread structure. The welded metal sleeve optimizes the load path. The full weld connection between the first sleeve 6 and the pipe 3 directly transmits the pipe load to the threaded locking mechanism. The external thread structure converts the tightening torque of the second sleeve 7 into axial thrust. At the same time, the metal material has high pressure resistance and can block the vibration from being transmitted to the sealing flange through rigid support when the pipeline is pulsed. The sleeve surface can be galvanized or sprayed. It has a longer service life than traditional bolted connections in acid and alkali media.

[0035] See Figure 1 , Figure 2 , Figure 3 , Figure 4 A double-layer sealing structure is provided between the pipe flange 4 and the flow meter flange 2, including an elastic sealing ring in the sealing groove and a sealing strip arranged circumferentially along the flange end face. The dual-channel seal constructs an active defense system. The elastic sealing ring achieves primary static sealing of the flange insertion gap, and the circumferential sealing strip generates a self-expansion effect to compensate for micro-leakage when the pressure fluctuates. At the same time, the cavity between the double seals can be injected with grease to form a barrier to prevent the intrusion of external corrosive media. When the inner sealing ring fails, the pressure change of the outer sealing strip can be monitored in real time by the sensor, providing a maintenance window.

[0036] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The connecting bracket 501 and the outer ring of the bearing 8 are fixed by welding. The welding of the outer ring of the bearing achieves zero torque loss transmission. The welding and fixing of the connecting bracket 501 and the bearing 8 eliminates the fit clearance caused by the traditional key connection, ensuring that the rotational torque of the second sleeve 7 is completely converted into the flange locking force. At the same time, the strength design of the welding point protects the core components by breaking the welding point when the pipeline is subjected to abnormal load impact. The free rotation of the inner ring of the bearing allows the flange surface to remain parallel when the pipeline is deflected, avoiding seal failure.

[0037] The implementation principle of this embodiment is as follows: the flow meter body 1 is placed between two pipes 3, the flow meter flange 2 is inserted into the pipe flange 4, the connecting plate 5 is passed through the flange hole by bolts 502 and fixed by nuts, the first sleeve 6 is welded to a section of the pipe 3, the second sleeve 7 is installed on the outer ring of the first sleeve 6 through the outer thread of the first sleeve 6, the bearing 8 is installed on the outer ring of the second sleeve 7, the outer ring connecting bracket 501 of the connecting plate 5 is welded and fixed to the outer ring of the bearing 8, and then the limiting plate 9 is rotated to one side of the connecting plate 5 by threads to limit the position of the connecting plate 5.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A flow meter that is easy to install, characterized in that: The device includes a flow meter body (1), on both sides of the flow meter body (1) are pipes (3), on both sides of the flow meter body (1) are flow meter flanges (2), on one side of the flow meter flange (2) is a connecting plate (5), on one side of the connecting plate (5) is a limit plate (9) threadedly connected, on the outer ring of the connecting plate (5) is a connecting bracket (501) fixedly provided, on the outer ring of the pipe (3) is a first sleeve (6) fixedly connected, on the outer ring of the first sleeve (6) is a second sleeve (7) threadedly connected, and the outer side of the second sleeve (7) is rotatably connected to the connecting bracket (501) through a bearing (8).

2. The easy-to-install flow meter according to claim 1, characterized in that: A pipe flange (4) is provided on one side of the pipe (3). The pipe flange (4) is a detachable structure and is inserted into the flow meter flange (2).

3. The flow meter that is easy to install according to claim 1, characterized in that: The connecting plate (5) is provided with several bolts (502) that connect the flow meter flange (2) and the pipe flange (4) on one side.

4. The easy-to-install flow meter according to claim 1, characterized in that: The limiting plate (9) is a ring structure used to limit the position of the connecting plate (5).

5. The easy-to-install flow meter according to claim 1, characterized in that: The first sleeve (6) is made of metal and is fixed to the pipe (3) by welding. The outer wall of the first sleeve (6) is provided with an external thread structure.

6. The easy-to-install flow meter according to claim 2, characterized in that: The pipe flange (4) and the flow meter flange (2) are provided with a double-layer sealing structure, including an elastic sealing ring in the sealing groove and a sealing strip arranged circumferentially along the flange end face.

7. The easy-to-install flow meter according to claim 1, characterized in that: The connecting bracket (501) and the outer ring of the bearing (8) are fixed by welding.

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