Double-tube synchronous damping structure and mass flow meter

Abstract

The utility model provides a double-tube synchronous damping structure and a mass flow meter. The double-tube synchronous damping structure comprises a first half damping block, a second half damping block, two clamping hoops and two locking assemblies. The first half damping block is provided with two first semicircular accommodating grooves, the second half damping block is provided with two second semicircular accommodating grooves, and after the second half damping block and the first half damping block are spliced, each second semicircular accommodating groove and the corresponding first semicircular accommodating groove are enclosed to form a circular hole for accommodating a measuring tube. The two clamping hoops are used for being arranged on the periphery of the first half damping block and the second half damping block which are spliced in a sleeving mode, and the two locking assemblies are used for locking the two clamping hoops so that the two clamping hoops can tightly hoop the first half damping block and the second half damping block which are spliced. By the adoption of the splicing type design, the synchronous damping block can be installed and replaced without disassembling the measuring pipe, the problem that a traditional integral synchronous damping block is inconvenient to maintain is solved, and a stable structural foundation is provided for equipment operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to mass flowmeter technical field, concretely relates to a double -pipe synchronous damping structure and mass flowmeter. BACKGROUND

[0002] The measurement principle of mass flowmeter is to rely on two measurement tubes to vibrate in completely opposite directions synchronously, and the Coriolis force generated by the fluid in the tube can make the double tube appear a detectable phase difference, thereby realizing flow measurement. The synchronous damping block is a key component arranged between the vibration node positions of the two measurement tubes, and its core functions include: keeping the double tube vibration synchronous to ensure the accuracy of phase difference detection, absorbing excess vibration energy to stabilize the vibration amplitude, limiting the relative displacement of the double tube to avoid collision, and forming a flexible coupling to maintain the stability of the vibration mode.

[0003] The synchronous damping block is usually made of flexible high-damping material, which may be affected by factors such as temperature, medium and vibration during long-term use, and may be aged, hardened, embrittled or deformed, resulting in a decrease in its synchronization, damping and limiting performance. The traditional synchronous damping block is of a monolithic structure, which needs to be sleeved into the measurement tube node during installation. Once the damping block needs to be replaced due to aging, wear or damage, the measurement tube often needs to be disassembled, resulting in high maintenance difficulty and cost, and seriously affecting the online operation time of the equipment. SUMMARY

[0004] In view of the defects in the prior art, the utility model aims to provide a double-tube synchronous damping structure and mass flowmeter to solve or at least alleviate one or more of the above technical problems or other aspects in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a double-tube synchronous damping structure, which comprises a first half damping block provided with two first half circular accommodating grooves arranged side by side; a second half damping block provided with two second half circular accommodating grooves arranged side by side, the second half circular accommodating grooves and the corresponding first half circular accommodating grooves form a circular hole for accommodating the measurement tube after the second half damping block is spliced with the first half damping block; two clamping hoops for sleeving the outer periphery of the spliced first half damping block and second half damping block; and two locking assemblies for locking the two clamping hoops to clamp the spliced first half damping block and second half damping block.

[0006] Preferably, the first half damping block has three first abutting surfaces, the second half damping block has three second abutting surfaces, each first abutting surface cooperates with a corresponding second abutting surface, and damping grease is filled between the first abutting surface and the second abutting surface.

[0007] Preferably, the first mating surface is provided with a mating positioning boss, and the second mating surface is provided with a mating positioning groove that mates with the mating positioning boss, and the damping grease is filled in the mating positioning groove.

[0008] Preferably, the wall of the docking positioning groove is inclined, the area of ​​the groove opening is larger than the area of ​​the groove bottom, and the outer peripheral wall of the docking positioning boss is adapted to the wall of the docking positioning groove.

[0009] Preferably, the inner side of the clamping hoop is provided with a limiting groove, and the first half damping block and the second half damping block after splicing are embedded in the limiting groove.

[0010] Preferably, the first half-damping block is provided with two first stress relief holes, each first stress relief hole corresponding to a first semi-circular receiving groove. One end of the first stress relief hole penetrates the outer peripheral wall of the first half-damping block and is close to one of the connection points of the two clamping clamps. The other end of the first stress relief hole is connected to the corresponding first semi-circular receiving groove.

[0011] The second half damping block is provided with two second stress relief holes, each second stress relief hole corresponding to a second semicircular receiving groove. One end of the second stress relief hole penetrates the outer peripheral wall of the second half damping block and is close to the other connection of the two clamping hoops. The other end of the second stress relief hole is connected to the corresponding second semicircular receiving groove.

[0012] This utility model also provides a mass flow meter, including the above-mentioned dual-tube synchronous damping structure.

[0013] The beneficial effects of this utility model are:

[0014] This utility model discloses a dual-tube synchronous damping structure and mass flow meter. Its modular design facilitates quick and easy installation and disassembly of the synchronous damping blocks, reducing assembly difficulty, maintenance difficulty, and costs, minimizing equipment downtime, and improving equipment operating efficiency. Furthermore, the synchronous damping blocks can be installed and replaced without disassembling the measuring tube, solving the problem of inconvenient maintenance associated with traditional integral synchronous damping blocks and providing a stable structural foundation for equipment operation. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1The structural schematic view of the double-pipe synchronous damping structure is provided for an embodiment of the utility model.

[0017] Figure 2 The structural schematic view of the double-pipe synchronous damping structure installed on the measuring pipe is provided for an embodiment of the utility model.

[0018] Figure 3 The structural schematic view of the first half damping block is provided for an embodiment of the utility model.

[0019] Figure 4 The structural schematic view of the first butt joint surface is provided for an embodiment of the utility model.

[0020] Figure 5 The structural schematic view of the second half damping block is provided for an embodiment of the utility model.

[0021] Figure 6 The cross section schematic view of the butt joint positioning boss, damping grease and butt joint positioning groove is provided for an embodiment of the utility model.

[0022] Figure 7 The structural schematic view of the clamping hoop is provided for an embodiment of the utility model.

[0023] Reference signs:

[0024] 10, first half damping block; 11, first half circular accommodating groove; 12, first butt joint surface; 13, butt joint positioning boss; 14, first stress release hole; 20, second half damping block; 21, second half circular accommodating groove; 22, second butt joint surface; 23, butt joint positioning groove; 24, second stress release hole; 30, clamping hoop; 31, limiting groove; 40, locking assembly; 50, damping grease; 60, measuring pipe. DETAILED DESCRIPTION

[0025] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used for more clearly illustrating the technical scheme of the utility model, therefore only as an example, and cannot limit the protection scope of the utility model.

[0026] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meanings understood by the technical personnel in the field of the utility model.

[0027] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] like Figures 1-7 As shown, in one embodiment of this utility model, a dual-tube synchronous damping structure is provided, including a first half-damping block 10, a second half-damping block 20, two clamping clamps 30, and two locking components 40. The first half-damping block 10 has two parallel first semi-circular receiving grooves 11, and the second half-damping block 20 has two parallel second semi-circular receiving grooves 21. After the second half-damping block 20 and the first half-damping block 10 are spliced, each second semi-circular receiving groove 21 and the corresponding first semi-circular receiving groove 11 enclose a circular hole for accommodating the measuring tube 60.

[0032] Two clamping hoops 30 are used to be sleeved on the outer periphery of the spliced first half-damping block 10 and second half-damping block 20, and two locking assemblies 40 are used to lock the two clamping hoops 30, so that the two clamping hoops 30 clamp the spliced first half-damping block 10 and second half-damping block 20. Specifically, the locking assembly 40 can adopt a nylon bolt and nut, generate a sustained anti-loosening friction force through elastic deformation, and ensure the stable clamping force of the two clamping hoops 30 on the first half-damping block 10 and second half-damping block 20.

[0033] The first half-damping block 10 and the second half-damping block 20 are both double-layer composite structures of inner high-damping silica gel and outer high-rigidity fluororubber. The inner high-damping silica gel can fully absorb vibration energy, guarantee damping performance, and maintain stable double-tube vibration. The outer high-rigidity fluororubber can provide sufficient structural strength, resist the clamping force of the clamping hoop 30 and fluid impact, avoid deformation of the first half-damping block 10 and second half-damping block 20, and realize the functional synergy of flexible damping and rigid support.

[0034] Through the splicing design of the first half-damping block 10 and the second half-damping block 20, the two circular holes formed by the splicing of the two can accommodate two measuring tubes 60, provide basic constraints for the two measuring tubes 60, and ensure vibration synchronization. In combination with the fixing structure of the clamping hoop 30 and the locking assembly 40, the spliced first half-damping block 10 and second half-damping block 20 can be uniformly clamped from the outer periphery, ensuring the close cooperation between the first half-damping block 10, the second half-damping block 20 and the two measuring tubes 60.

[0035] In summary, the double-tube synchronous damping structure disclosed in the embodiment is designed by splicing, which facilitates the installation and disassembly of the synchronous damping block, reduces the assembly difficulty, maintenance difficulty and cost, reduces the equipment downtime, and improves the equipment operation efficiency. At the same time, the installation and replacement of the synchronous damping block can be completed without disassembling the measuring tube 60, solving the problem of inconvenient maintenance of the traditional integral synchronous damping block, and providing a stable structural basis for equipment operation.

[0036] In one embodiment, referring to Figures 3-5The first half-damping block 10 has three first abutting surfaces 12, and the second half-damping block 20 has three second abutting surfaces 22. Each first abutting surface 12 is matched with a corresponding second abutting surface 22. The first abutting surface 12 and the second abutting surface 22 are filled with damping grease 50. The damping grease 50 has high viscosity and high damping coefficient. The three first abutting surfaces 12 of the first half-damping block 10 are matched with the three second abutting surfaces 22 of the second half-damping block 20, forming a multi-surface matched splicing structure, which improves the positioning accuracy and structural stability of the two half-damping blocks after splicing. At the same time, the damping grease 50 is filled between the first abutting surface 12 and the second abutting surface 22. After the damping grease 50 fills the splicing joint, a sealed damping layer is formed, which prevents the leakage of vibration energy and makes the performance of the splicing structure equal to that of the integral structure.

[0037] In one embodiment, the first abutting surface 12 is provided with an abutting positioning boss 13 which is integrally formed with the first half-damping block 10. The second abutting surface 22 is provided with an abutting positioning groove 23 which is matched with the abutting positioning boss 13. The damping grease 50 is filled in the abutting positioning groove 23. The matching of the abutting positioning boss 13 and the abutting positioning groove 23 realizes accurate positioning during the splicing process of the two half-damping blocks, reduces the alignment difficulty during assembly, and improves the assembly efficiency. At the same time, the abutting positioning boss 13 and the abutting positioning groove 23 can effectively limit the relative movement of the two half-damping blocks after splicing, ensure the consistent stress constraint of the double tubes, maintain the stability of the vibration mode, and further improve the stability of the splicing structure.

[0038] In addition, the damping grease 50 is filled in the abutting positioning groove 23, so that the damping grease 50 can be more stably attached between the abutting surfaces, avoiding the loss of the damping grease 50 during the operation of the structure, ensuring the long-term effectiveness of the damping effect, and prolonging the service life of the structure. The abutting positioning groove 23 can also increase the contact area of the damping grease 50 with the first abutting surface 12 and the second abutting surface 22, further enhancing the damping and buffering performance, and improving the vibration absorption capacity of the overall structure.

[0039] In an embodiment, the slot wall of the butt joint positioning groove 23 is arranged obliquely, the area of the slot opening of the butt joint positioning groove 23 is larger than the area of the slot bottom of the butt joint positioning groove 23, and the outer peripheral wall of the butt joint positioning boss 13 is matched with the slot wall of the butt joint positioning groove 23. This structure design makes the butt joint positioning boss 13 automatically slide into the slot bottom along the oblique slot wall during splicing, and the positioning can be completed without accurate alignment, which reduces the alignment difficulty during assembly and improves the installation efficiency in the industrial field. At the same time, the oblique slot wall and the matched outer peripheral wall form a surface-to-surface matching relationship, which increases the matching area compared with the vertical slot wall. In addition, the flared slot body structure can store more damping grease 50, and the butt joint positioning boss 13 will extrude the damping grease 50 during embedding during splicing, so that the damping grease 50 is uniformly filled in the gap between the outer peripheral wall of the butt joint positioning boss 13 and the slot wall of the butt joint positioning groove 23, forming a complete sealing damping layer, further preventing vibration energy leakage and damping grease 50 loss, and improving the damping performance stability.

[0040] In an embodiment, referring to Figure 7 , the inner side of the clamping hoop 30 is provided with a limiting groove 31, and the first half damping block 10 and the second half damping block 20 after splicing are embedded in the limiting groove 31. The limiting groove 31 can play a circumferential limiting role on the first half damping block 10 and the second half damping block 20, effectively preventing the damping block from rotating circumferentially in the clamping hoop 30, ensuring that the first half damping block 10 and the second half damping block 20 maintain accurate relative positions with the measuring tube 60, and further improving the structural positioning accuracy and stability, thereby ensuring that the synchronous vibration of the double tubes is not affected.

[0041] In an embodiment, the first half damping block 10 is provided with two first stress release holes 14, each first stress release hole 14 corresponds to a first half circular accommodating groove 11, one end of the first stress release hole 14 penetrates the outer peripheral wall of the first half damping block 10 and is close to one of the two clamping hoops 30, and the other end of the first stress release hole 14 is in communication with the corresponding first half circular accommodating groove 11.

[0042] The second half damping block 20 is provided with two second stress release holes 24, each second stress release hole 24 corresponds to a second half circular accommodating groove 21, one end of the second stress release hole 24 penetrates the outer peripheral wall of the second half damping block 20 and is close to the other connection of the two clamping hoops 30, and the other end of the second stress release hole 24 is in communication with the corresponding second half circular accommodating groove 21.

[0043] The first stress release hole 14 and the second stress release hole 24 accurately correspond to the stress concentration area at the connection of the clamping hoop 30, release the concentrated stress along the hole, and avoid the cracking and deformation of the first half damping block 10 and the second half damping block 20 caused by excessive local stress, thereby improving the fatigue resistance and service life of the first half damping block 10 and the second half damping block 20 without weakening the structural rigidity.

[0044] The embodiment also provides a mass flowmeter comprising the double-tube synchronous damping structure.

[0045] In the description of the utility model, a large number of specific details are explained. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the present description.

[0046] Finally, it should be noted that: the above embodiments are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the utility model, and they should be covered in the scope of the claims and the description of the utility model.

Claims

1. A twin-tube synchronous damping structure characterized by comprising: include: The first half damping block (10) is provided with two parallel first semi-circular receiving grooves (11). The second half damping block (20) is provided with two parallel second semicircular receiving grooves (21). After the second half damping block (20) is spliced ​​with the first half damping block (10), each second semicircular receiving groove (21) and the corresponding first semicircular receiving groove (11) enclose a circular hole for receiving the measuring tube (60). Two clamping hoops (30) are used to fit around the outer periphery of the first half-damping block (10) and the second half-damping block (20) after splicing; and Two locking components (40) are used to lock the two clamping hoops (30) so that they clamp the first half damping block (10) and the second half damping block (20) after splicing.

2. The dual-tube synchronous damping structure according to claim 1, characterized by, The first half-damping block (10) has three first mating surfaces (12), and the second half-damping block (20) has three second mating surfaces (22). Each first mating surface (12) is matched with the corresponding second mating surface (22), and damping grease (50) is filled between the first mating surface (12) and the second mating surface (22).

3. The dual-tube synchronous damping structure according to claim 2, characterized by, The first mating surface (12) is provided with a mating positioning boss (13), and the second mating surface (22) is provided with a mating positioning groove (23) that cooperates with the mating positioning boss (13). The damping grease (50) is filled in the mating positioning groove (23).

4. The dual-tube synchronous damping structure according to claim 3, characterized by, The groove wall of the docking positioning groove (23) is inclined, the area of ​​the groove opening of the docking positioning groove (23) is larger than the area of ​​the bottom of the docking positioning groove (23), and the outer peripheral wall of the docking positioning boss (13) is adapted to the groove wall of the docking positioning groove (23).

5. The dual-tube synchronous damping structure according to claim 1, characterized by, The clamping hoop (30) has a limiting groove (31) on its inner side, and the first half damping block (10) and the second half damping block (20) after splicing are embedded in the limiting groove (31).

6. The dual-tube synchronous damping structure according to claim 1, characterized by The first half-damping block (10) is provided with two first stress relief holes (14), each first stress relief hole (14) corresponds to a first semi-circular receiving groove (11), one end of the first stress relief hole (14) penetrates the outer peripheral wall of the first half-damping block (10) and is close to one of the connection points of the two clamping hoops (30), and the other end of the first stress relief hole (14) is connected to the corresponding first semi-circular receiving groove (11); The second half damping block (20) is provided with two second stress relief holes (24), each second stress relief hole (24) corresponds to a second semicircular receiving groove (21), one end of the second stress relief hole (24) penetrates the outer peripheral wall of the second half damping block (20) and is close to the other connection of the two clamping hoops (30), and the other end of the second stress relief hole (24) is connected to the corresponding second semicircular receiving groove (21).

7. A mass flow meter characterized by, The dual-tube synchronous damping structure includes any one of claims 1-6.

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