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CN-116380184-B - Microbending tube array Mass flowmeter

CN116380184BCN 116380184 BCN116380184 BCN 116380184BCN-116380184-B

Abstract

The invention discloses a microbending tube-in-tube type mass flowmeter, which relates to the field of fluid mass measurement and comprises a shell and a tube-in-tube mechanism, wherein the tube-in-tube mechanism comprises a plurality of capillary bends, two connecting components are arranged on the outer side walls of the capillary bends, and each connecting component comprises two tube clamps. According to the invention, the rotating rods are clamped by the tweezers to rotate, so that the two ends of the rotating rods drive the rubber columns to move, the moved rubber columns are fixed at the limit positions of the new positioning circular grooves, when the distance between the capillary elbows needs to be increased, the rotating rods rotate towards the axial direction, the rotating rods drive the two circular arc rails to be far away, the circular arc rails drive the capillary elbows to be far away from each other, the whole transverse or longitudinal capillary elbows are separated from the whole tube arranging mechanism, one opening of the guide elbow is pulled out, the number of the capillary elbows is reduced, the effect of adjusting the distance between the capillary elbows is realized, the problem that the capillary elbows vibrate to interfere each other due to overlarge flow is avoided, and the measurement accuracy at high flow is improved.

Inventors

  • LIU JIE
  • TANG YONGZHI
  • WANG XIN
  • Xu Dasong
  • HUANG WUXIN
  • WANG GUOWU

Assignees

  • 合肥精大仪表股份有限公司

Dates

Publication Date
20260508
Application Date
20230523

Claims (10)

  1. 1. A microbending tube-type mass flowmeter comprises a shell (1) and a tube-arranging mechanism (5) and is characterized in that the tube-arranging mechanism (5) comprises a plurality of capillary tube-bending tubes (51), two connecting components (52) for connecting adjacent capillary tube-bending tubes (51) are arranged on the outer side walls of the capillary tube-bending tubes (51), each connecting component (52) comprises two tube clamps (521), an arc rail (522) is fixedly connected to the outer side walls of the tube clamps (521), rubber columns (526) are slidably connected to the inner side walls of the arc rails (522), two connecting components (52) which are located on the adjacent two capillary tube-bending tubes (51) and are opposite in position are rotatably connected through a rotating rod (53), one rubber column (526) is fixedly connected to the two ends of the rotating rod (53), a plurality of positioning circular grooves (524) are formed in the two inner side walls of the arc rails (522), a limiting cylinder (523) is fixedly connected to the corner positions of the two ends of each tube clamp (521), two limiting cylinders (521) are fixedly connected to the two connecting components located on the adjacent two capillary tube-bending tubes (51) and are fixedly connected to the two guide cylinders (521) through two guide screws (521) which are fixedly connected to one capillary tube-bending tubes (521), both ends of the arc rail (522) are provided with through holes.
  2. 2. The microbending tubular mass flowmeter of claim 1, wherein the outer side wall of the connecting component (52) is provided with a protection mechanism (9), the protection mechanism (9) comprises a first fixing frame (91) and a second fixing frame (92), and a protection sponge (93) is arranged at the inner center position of the first fixing frame (91).
  3. 3. The microbending tubular mass flowmeter of claim 2, wherein the protective sponge (93) is overlapped with the outer side wall of the capillary tube (51), a flat groove (99) is formed in the outer side wall of the first fixing frame (91), and an extrusion groove (95) is formed in the bottom wall of the flat groove (99).
  4. 4. The microbending tubular mass flowmeter of claim 3, wherein the inner bottom wall of the extrusion groove (95) is fixedly connected with an elastic sheet (96), the top end of the elastic sheet (96) is fixedly connected with an elastic block (98), and a baffle (94) is arranged above the elastic block (98).
  5. 5. The microbending tubular mass flowmeter of claim 4, wherein the baffle plate (94) is fixedly connected with the inner side wall of the flat groove (99), the bottom end of the baffle plate (94) is slidably connected with a limiting plate (97), and the limiting plate (97) is fixedly connected with the outer side wall of the second fixing frame (92).
  6. 6. The microbending tubular mass flowmeter of claim 5, wherein the outer side of the tubular mechanism (5) is sleeved with a guide bent pipe (2), two ends of the guide bent pipe (2) are fixedly connected with flanges (3), and a plurality of mounting holes (31) are formed in the outer side wall of each flange (3).
  7. 7. The microbending tubular mass flowmeter of claim 6, wherein the middle position of the guide elbow (2) is recessed downwards to form an inverted cone structure, and the middle position of the outer side wall of the guide elbow (2) is fixedly connected with a vibration pickup sensing assembly (6).
  8. 8. The microbending tubular mass flowmeter of claim 7, wherein the vibration pickup sensing assemblies (6) are provided with vibration excitation sensing assemblies (7) at two ends, the vibration excitation sensing assemblies (7) are fixedly connected with the outer side wall of the guide elbow pipe (2), and a signal conversion assembly (8) is arranged above the top end of the vibration pickup sensing assembly (6).
  9. 9. The microbending tubular mass flowmeter of claim 8, wherein the inner side wall of the shell (1) is fixedly connected with the outer side wall of the guide elbow pipe (2), the outer side wall of the signal conversion assembly (8) is fixedly connected with the inner side wall of the shell (1), and a detection dial plate (4) is arranged above the top end of the signal conversion assembly (8).
  10. 10. The microbending tubular mass flowmeter of claim 9, wherein the bottom end of the detection dial plate (4) is fixedly connected with the side wall of the shell (1), and the outer side wall of the first fixing frame (91) is fixedly connected with the inner side wall of the guide elbow (2).

Description

Microbending tube array Mass flowmeter Technical Field The invention relates to the technical field of fluid quality measurement, in particular to a microbending tubular mass flowmeter. Background The coriolis mass flowmeter is a device for directly measuring mass flow by using coriolis force principle that fluid generates proportional to mass flow when flowing in vibrating pipeline, and the coriolis force principle is that the fluid can give a reaction force to tube perpendicular to its flowing direction in order to resist the forced vibration, under the action of the coriolis effect force, the vibration of tube is not synchronous, the inlet tube and outlet tube can be different in time sequence of vibration, and the magnitude of the time difference can be detected, so that the magnitude of mass flow can be determined. In the prior art, a micro-bending tube type mass flowmeter like the one in CN107290015A comprises a shell, two guide sleeves, a plurality of arched guide tubes, a pair of arched flow tubes, a driving element, two detection elements and two detection elements, wherein the two guide sleeves are respectively connected with two ends of the shell, the arched guide tubes are arranged in the shell, two ends of each guide tube are respectively communicated with the guide sleeves, the length of each flow tube is equal to that of each guide tube, the driving element is fixed on the two flow tubes, the driving element drives the pair of flow tubes to vibrate and is positioned in the center of the flow tube, and each detection element is respectively fixed on the two flow tubes to detect vibration and is respectively positioned on two sides of the driving element. However, in the prior art, the arrangement mode of the tubes for the U-shaped tube in the prior art converts the vibration detection quantity of one U-shaped tube into the vibration detection quantity of a plurality of tubes, and improves the measurement precision by the thought of becoming zero, but in the actual measurement, the mass and the flow of the fluid are not stable, when the flow of the fluid is overlarge, the vibration amplitude of the fluid is increased, the vibration among all the tubes in the tube can generate interference, and the precision of the measurement result is affected. Disclosure of Invention The invention aims to provide a microbending tubular mass flowmeter, which aims to solve the problems that in the prior art, in actual measurement, the mass and flow of fluid are not stable, when the flow of fluid is too large, the vibration amplitude of the fluid is increased, the vibration among various pipelines in a tubular can generate interference, and the accuracy of a measurement result is affected. The technical scheme includes that the microbending tube-in-tube mass flowmeter comprises a shell and a tube-in-tube mechanism, wherein the tube-in-tube mechanism comprises a plurality of capillary bends, two connecting assemblies for connecting adjacent capillary bends are arranged on the outer side walls of the capillary bends, each connecting assembly comprises two tube clamps, arc rails are fixedly connected to the outer side walls of the tube clamps, rubber columns are fixedly connected to the inner side walls of the arc rails in a sliding manner, one rubber column is fixedly connected to the two ends of each rotating rod respectively, and the two connecting assemblies located on the connecting assemblies on the two adjacent capillary bends and opposite to each other are connected in a rotating manner through one rotating rod; The pipe clamp comprises two capillary bent pipes, wherein two ends of each capillary bent pipe are fixedly connected with limiting cylinders, guide posts are slidably connected between the limiting cylinders, the limiting cylinders are located on the two adjacent capillary bent pipes and are opposite in position, the limiting cylinders are slidably connected with the guide posts through one guide post, fixing screws are connected between the two pipe clamps in a threaded mode, the capillary bent pipes are movably connected with the two pipe clamps through two pipe clamps, and through holes are formed in the two ends of each circular arc rail. Preferably, the outer side wall of the connecting assembly is provided with a protection mechanism, the protection mechanism comprises a first fixed frame and a second fixed frame, and a protection sponge is arranged at the inner center position of the first fixed frame. Preferably, the protection sponge is overlapped with the outer side wall of the capillary bent pipe, a flat groove is formed in the outer side wall of the first fixing frame, and an extrusion groove is formed in the bottom wall of the flat groove. Preferably, the inner bottom wall of the extrusion groove is fixedly connected with an elastic sheet, the top end of the elastic sheet is fixedly connected with an elastic pressing block, and a baffle is arranged above the elastic pressing block. Pre