Small-size mass flow meter sensor

Abstract

The utility model relates to the technical field of flow meter sensors, and discloses a small-size mass flow meter sensor which comprises a shell, two micro-bending measuring pipes are arranged in the shell in parallel, a cross beam is fixedly connected to the bottom of the shell, and a driving assembly is arranged in the middle of the top end of each micro-bending measuring pipe. Two sampling assemblies are arranged at the bent arc position of the micro-bend measuring pipe and symmetrically installed on the left side and the right side of the micro-bend measuring pipe, a plurality of vibrating pieces are arranged at the bottom of the micro-bend measuring pipe, two diverters are fixedly connected to the two ends of the bottom of the micro-bend measuring pipe, and the diverters are fixedly connected with a cross beam side plate. Through the eccentric design of the cross beam side plate and the inward design of the driving assembly, the shell can be shrunk as much as possible, the overall structure is more compact, the occupied installation space is extremely small, the pipe bending angle is designed between 80 degrees and 89 degrees, the length of a measuring pipe is increased as much as possible on the basis that the small size is guaranteed, and high metering accuracy is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to flowmeter sensor technical field, concretely is a small size mass flowmeter sensor. BACKGROUND

[0002] Coriolis mass flowmeter (hereinafter referred to as flowmeter) is the representative of the advanced technology in current mass flow measurement instrument, and it is a kind of high-precision instrument for measuring phase difference and vibration frequency of fluid when passing through Coriolis force, and then measuring mass flow and density. With the improvement of the recognition degree of the market to the flowmeter, the demand for the flowmeter is also developing rapidly, and the production automation degree, production efficiency, cost, weight, anti-interference ability, surface treatment effect, customizability, measuring flow rate of the flowmeter have higher requirements.

[0003] The prior art is mostly large-sized flowmeter, which occupies a large space and has generally high measuring flow rate, and cannot meet the needs of the market. UTILITY MODEL CONTENT

[0004] To solve the technical problems of large-sized flowmeter, large space occupation and generally high measuring flow rate, the utility model provides a small size mass flowmeter sensor.

[0005] The utility model adopts the following technical scheme: a small size mass flowmeter sensor, including the shell, the inside parallel of the shell is provided with two micro-bending measuring pipes, the bottom of the shell is fixedly connected with the crossbeam, the top middle position of the micro-bending measuring pipe is provided with the drive assembly, the arc of the micro-bending measuring pipe is provided with two sampling assemblies, two The sampling assembly is symmetrically installed on the left and right sides of the micro-bending measuring pipe, the bottom of the micro-bending measuring pipe is provided with a plurality of vibration pieces, the bottom of the micro-bending measuring pipe is fixedly connected with two shunt devices, the both ends of the crossbeam are provided with two crossbeam side plates, the shunt device is fixedly connected with the crossbeam side plate, and the top of the crossbeam is fixedly connected with the adhesive line support.

[0006] Preferably, the shell is composed of a middle plate and two side plates.

[0007] Preferably, the crossbeam side plate is an eccentric structure.

[0008] Preferably, the micro-bending measuring pipe comprises a first straight pipe section, two first curved sections are symmetrically connected at both ends of the first straight pipe section, two second straight pipe sections are symmetrically connected at the bottom of the two first curved sections, two second curved sections are symmetrically connected at the bottom of the two second straight pipe sections, two third straight pipe sections are symmetrically connected at the bottom of the two second curved sections, and one end of the third straight pipe section is welded in the interior of the shunt device.

[0009] Preferably, the driving assembly comprises a coil, a magnet, a first support, a second support, a first fixing screw and a second fixing screw, the first support and the second support are fixedly connected symmetrically outside the two micro-bending measuring pipes, the coil is fixedly connected on one side of the first support through the first fixing screw, the magnet is fixedly connected on one side of the second support through the second fixing screw, and the axial lines of the coil and the magnet coincide with each other.

[0010] Preferably, a plurality of the vibrating pieces are symmetrically arranged outside the two second bending sections, two vibrating pieces are respectively located at positions close to the second straight pipe sections of the two second bending sections, and two vibrating pieces are respectively located at positions close to the third straight pipe sections of the two second bending sections.

[0011] Preferably, the inside of the cross beam is provided with a groove and a through hole, and the bottom hole of the thread gluing support is concentrically arranged in the through hole.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] In the utility model, the eccentric design of the cross beam side plate and the inward design of the driving assembly can minimize the shell, compact the overall structure and occupy little installation space.

[0014] In the utility model, the bending pipe angle is designed to be between 80-89°, the length of the measuring pipe is maximized on the basis of small size, and high measurement accuracy is ensured.

[0015] In the utility model, the design of the structure and the welding process ensures the precision and stability on the basis of small size, the accuracy can reach 0.1 level, the requirement of accurate measurement can be met, the shell only needs to be cut and welded, batch production is facilitated, the cost is reduced, and the shell is curved and has no sharp edges, so that accidental touch and injury can be effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a shunt and cross beam side plate connecting structure schematic view of the utility model;

[0018] Figure 3 It is a shell schematic view of the utility model;

[0019] Figure 4 It is a micro-bending measuring pipe schematic view of the utility model;

[0020] Figure 5 It is a driving assembly schematic view of the utility model;

[0021] Figure 6The utility model discloses a crossbeam schematic diagram.

[0022] In the drawing: 1, shell; 101, middle plate; 102, side plate; 2, slightly curved measuring pipe; 201, first straight pipe section; 202, first curved section; 203, second straight pipe section; 204, second curved section; 205, third straight pipe section; 3, drive assembly; 301, coil; 302, magnet; 303, first support; 304, second support; 305, first fixed screw; 306, second fixed screw; 4, sampling assembly; 5, vibrating reed; 6, flow divider; 7, crossbeam side plate; 8, crossbeam; 801, groove; 802, through hole; 9, thread bonding support. DETAILED DESCRIPTION

[0023] In the following, the utility model is further described in combination with the drawings and specific embodiments, and it needs to be explained that the following described embodiments or technical features can be combined to form new embodiments on the premise of not conflicting.

[0024] Embodiment 1: please refer to Figure 1 - Figure 6 The small size mass flowmeter sensor of the embodiment comprises a shell 1, two slightly curved measuring pipes 2 are arranged in parallel in the shell 1, the bottom of the shell 1 is fixedly connected with a crossbeam 8, the top middle position of the slightly curved measuring pipe 2 is provided with a drive assembly 3, the arc of the slightly curved measuring pipe 2 is provided with two sampling assemblies 4, the two sampling assemblies 4 are symmetrically installed on the left and right sides of the slightly curved measuring pipe 2, the bottom of the slightly curved measuring pipe 2 is provided with a plurality of vibrating reeds 5, the bottom of the slightly curved measuring pipe 2 is fixedly connected with two flow dividers 6 at both ends, the both ends of the crossbeam 8 are provided with two crossbeam side plates 7, the flow divider 6 is fixedly connected with the crossbeam side plate 7, and the top of the crossbeam 8 is fixedly connected with a thread bonding support 9.

[0025] The both ends of the slightly curved measuring pipe 2 are connected in the circular small hole on the flow divider 6, the crossbeam 8 can be processed by adopting square steel processing or plate welding, the crossbeam 8 is internally provided with two grooves 801 and through holes 802, the thread bonding support 9 is concentrically placed in the through hole 802 of the crossbeam 8, the thread bonding support 9 is spot welded on the crossbeam 8, and the thread bonding support 9 facilitates thread bonding and overall processing of the shell 1.

[0026] The crossbeam side plate 7 is an eccentric structure, the overall height of the slightly curved measuring pipe 2 is reduced, so that the shell 1 is minimized, the overall structure is more compact, the installation space is extremely small, the crossbeam side plate 7 and the crossbeam 8 are welded by adopting argon arc welding, and the stability of the overall structure of the flowmeter is ensured.

[0027] The vibrating reed 5 is fixed on the slightly curved measuring pipe 2 by welding or other reliable ways, and the slightly curved measuring pipe 2 and the flow divider 6 are also fixed together by welding or other reliable ways.

[0028] Further, the shell 1 is composed of a middle plate 101 and two side plates 102, the middle plate 101 and the side plates 102 can be obtained by one-time blanking such as laser cutting, without the need for further machining, the inside of the shell 1 is hollow, and the shell 1 is centrally welded on the cross beam 8 by welding;

[0029] Further, the micro-bend measuring pipe 2 comprises a first straight pipe section 201, two first curved sections 202 are symmetrically connected at two ends of the first straight pipe section 201, two second straight pipe sections 203 are symmetrically connected at bottoms of the two first curved sections 202, two second curved sections 204 are symmetrically connected at bottoms of the two second straight pipe sections 203, two third straight pipe sections 205 are symmetrically connected at bottoms of the two second curved sections 204, and one end of each third straight pipe section 205 is welded in the inside of the flow divider 6;

[0030] The micro-bend measuring pipe 2 has a bending angle of 80-89°, the length of the measuring pipe is increased as much as possible on the basis of ensuring a small size, and high measurement accuracy is ensured.

[0031] Further, the driving assembly 3 comprises a coil 301, a magnet 302, a first support 303, a second support 304, a first fixing screw 305, and a second fixing screw 306, the first support 303 and the second support 304 are fixedly and symmetrically connected outside the two micro-bend measuring pipes 2, the coil 301 is fixedly connected to one side of the first support 303 through the first fixing screw 305, the magnet 302 is fixedly connected to one side of the second support 304 through the second fixing screw 306, and the axial lines of the coil 301 and the magnet 302 coincide with each other.

[0032] The sampling assembly 4 has the same structure and principle of action as the driving assembly 3, and is symmetrically installed at the second straight pipe section 203 of each micro-bend measuring pipe 2 close to the first curved section 202, when no fluid flows through the micro-bend measuring pipe 2, the micro-bend measuring pipe 2 does not produce distortion, and the detection signals of the two electromagnetic signal sampling assemblies 4 are in phase, when fluid flows through the micro-bend measuring pipe 2, the micro-bend measuring pipe 2 produces distortion, and the detection signals of the two electromagnetic signal sampling assemblies 4 produce a phase difference, and the size of the fluid flow is calculated through the phase difference.

[0033] Further, a plurality of vibration plates 5 are symmetrically arranged outside the two second curved sections 204, the two vibration plates 5 are respectively located at the second curved sections 204 close to the second straight pipe sections 203, and the two vibration plates 5 are respectively located at the second curved sections 204 close to the third straight pipe sections 205.

[0034] The technical scheme is as follows: the eccentric design of the side plate 7 of the cross beam and the inward design of the driving assembly 3 make the shell 1 as small as possible, the overall structure is more compact, the installation space is extremely small, the angle of the bent pipe is set between 80-89°, the length of the measuring pipe is increased as much as possible on the basis of ensuring the small size, the high measurement accuracy is ensured, the precision and stability are ensured on the basis of reducing the size through the design of the structure and the welding process, the accuracy can reach 0.1 level, the accurate measurement requirement can be met, the shell 1 only needs to be welded after being cut by laser, the batch production is facilitated, the cost is reduced, and the shell 1 is in a curved shape and has no sharp edges and corners, so that accidental touch and injury can be effectively avoided.

[0035] The above embodiment is only a preferred embodiment of the utility model, and cannot be used to limit the range of the utility model protection, and any non-substantial change and replacement made by the person skilled in the art on the basis of the utility model belongs to the range of the utility model protection.

Claims

1. A small-sized mass flow meter sensor, comprising a housing (1), wherein two micro-bent measuring tubes (2) are arranged in parallel inside the housing (1), and a crossbeam (8) is fixedly connected to the bottom of the housing (1), characterized in that, A drive assembly (3) is provided at the middle of the top of the micro-bend measuring tube (2). Two sampling assemblies (4) are provided at the bend of the micro-bend measuring tube (2). The two sampling assemblies (4) are symmetrically installed on the left and right sides of the micro-bend measuring tube (2). Multiple vibrating plates (5) are provided at the bottom of the micro-bend measuring tube (2). Two flow dividers (6) are fixedly connected to the bottom two ends of the micro-bend measuring tube (2). Two crossbeam side plates (7) are provided at both ends of the crossbeam (8). The flow dividers (6) are fixedly connected to the crossbeam side plates (7). A wire-adhesive bracket (9) is fixedly connected to the top of the crossbeam (8). Among them, the side plate (7) of the crossbeam is an eccentric structure, and the bending angle of the micro-bending measuring tube (2) is set to 80-89°.

2. The small-size mass flow meter sensor according to claim 1, characterized in that, The outer shell (1) is composed of a middle plate (101) and two side panels (102).

3. A small-size mass flow meter sensor according to claim 1, characterized in that, The micro-bend measuring tube (2) includes a first straight pipe section (201), two first bend sections (202) are symmetrically connected to both ends of the first straight pipe section (201), two second straight pipe sections (203) are symmetrically connected to the bottom of the two first bend sections (202), two second bend sections (204) are symmetrically connected to the bottom of the two second straight pipe sections (203), and two third straight pipe sections (205) are symmetrically connected to the bottom of the two second bend sections (204). One end of the third straight pipe section (205) is welded to the inside of the distributor (6).

4. A small-size mass flow meter sensor according to claim 1, characterized in that, The drive assembly (3) includes a coil (301), a magnet (302), a first bracket (303), a second bracket (304), a first fixing screw (305), and a second fixing screw (306). The first bracket (303) and the second bracket (304) are symmetrically fixedly connected to the outside of two micro-bend measuring tubes (2). The coil (301) is fixedly connected to one side of the first bracket (303) by the first fixing screw (305), and the magnet (302) is fixedly connected to one side of the second bracket (304) by the second fixing screw (306). The center lines of the coil (301) and the magnet (302) coincide with each other.

5. A small-size mass flow meter sensor according to claim 3, characterized in that, Multiple vibrating plates (5) are symmetrically arranged outside the two second curved sections (204). The two vibrating plates (5) are respectively located in the two second curved sections (204) near the second straight pipe section (203) and the two vibrating plates (5) are respectively located in the two second curved sections (204) near the third straight pipe section (205).

6. A small-size mass flow meter sensor according to claim 1, characterized in that, The crossbeam (8) has a groove (801) and a through hole (802) inside, and the bottom hole of the wire adhesive bracket (9) is placed concentrically with the through hole (802).

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