Mass flow meter

Abstract

The invention provides a mass flow meter, and relates to the technical field of detection. The mass flowmeter provided by the invention comprises a main body, a shell, a measuring tube, a vibration unit, a detection unit and a bracket assembly, the two ends of the measuring tube are connected to the body, the vibration unit and the detection unit are arranged on the measuring tube, the vibration unit comprises an electromagnetic coil, and the detection unit is used for detecting the vibration state of the measuring tube and comprises an induction coil; the support assembly comprises a first support and a reinforcing support, the first end of the first support is connected to the body, a gap is formed between the second end of the first support and the electromagnetic coil, a starting end wire and a tail end wire of the electromagnetic coil are connected to the second end of the first support, and the first support is connected to one side, in the width direction of the first support, of the reinforcing support. The reinforcing support is connected to the body, and an included angle is formed between the length direction of the reinforcing support and the length direction of the first support. The invention provides a mass flow meter capable of improving measurement accuracy.

Description

Technical Field

[0001] This invention relates to the field of detection technology, and more particularly to a mass flow meter. Background Technology

[0002] The Coriolis mass flow meter is an instrument that directly and precisely measures the mass flow rate of fluids. Internally, it uses a drive coil to drive the measuring tube to vibrate, and a detection coil to detect the phase difference of the measuring tube. The arrangement of the coil flying wire plays an important role in the measurement accuracy and stability of the flow meter.

[0003] Currently, the internal coil wiring of a mass flow meter is generally achieved by attaching the wires leading out from both ends of the coil to the wall of the measuring tube, so that the wires are connected to the main circuit along the tube wall.

[0004] However, this wiring method reduces the measurement accuracy of the mass flow meter. Summary of the Invention

[0005] To address at least one of the problems mentioned in the background art, the present invention provides a mass flow meter that can improve measurement accuracy.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The present invention provides a mass flow meter, including a main body, a housing, a measuring tube, a vibration unit, a detection unit, and a support assembly, wherein at least a portion of the measuring tube, the vibration unit, the detection unit, and at least a portion of the support assembly are disposed within the housing;

[0008] The two ends of the measuring tube are connected to the main body. The vibration unit and the detection unit are set in the measuring tube. The vibration unit is used to make the measuring tube vibrate. The vibration unit includes an electromagnetic coil. The detection unit is used to detect the vibration state of the measuring tube, so as to obtain the mass flow rate through the measuring tube based on the vibration state. The detection unit includes an induction coil.

[0009] The support assembly includes a first support and a reinforcing support. The first end of the first support is connected to the main body, and the second end of the first support extends toward the electromagnetic coil. There is a gap between the second end of the first support and the electromagnetic coil. The starting end wire and the ending end wire of the electromagnetic coil are both connected to the second end of the first support and extend along the first support to the main body. The reinforcing support is constructed as a plate-like structure. The width direction of the reinforcing support is consistent with the thickness direction of the outer shell. The first support is connected to one side of the reinforcing support along its own width direction. The reinforcing support is connected to the main body, and there is an angle between the length direction of the reinforcing support and the length direction of the first support.

[0010] As an optional implementation, the support assembly further includes a second support, the first end of which is connected to the main body, the second end of which extends toward the induction coil, and there is a gap between the second end of the second support and the induction coil. The start end wire and the end end wire of the induction coil are both connected to the second end of the second support and extend along the second support to the main body. There is a gap between the first support and the second support in the direction of the thickness of the housing.

[0011] As an optional implementation, there are two induction coils, which are symmetrically distributed on both sides of the electromagnetic coil. The support assembly also includes two second supports. The first end of the second support is connected to the main body, and the second end of the second support extends toward the corresponding induction coil. There is a gap between the second end of the second support and the corresponding induction coil. The start end wire and the end end wire of the corresponding induction coil are both connected to the second end of the second support and extend along the second support to the main body. The two second supports and the first support are respectively set at an angle along their length directions.

[0012] As an optional implementation, the length direction of the first support is perpendicular to the length direction of the main body, and the two second supports are symmetrically arranged relative to the first support. The length directions of the two second supports are at an angle to the length direction of the main body, and the angle is less than 90°.

[0013] The second end of the first bracket and the second end of the second bracket are located on one side of the measuring tube, or the second end of the first bracket and the second end of the second bracket are located between the measuring tube.

[0014] As an optional implementation, there are two induction coils, which are symmetrically distributed on both sides of the electromagnetic coil. The support assembly also includes two second supports. The first end of the second support is connected to the main body, and the second end of the second support extends toward the corresponding induction coil. There is a gap between the second end of the second support and the corresponding induction coil. The start end wire and the end end wire of the corresponding induction coil are both connected to the second end of the second support and extend along the second support to the main body. The thickness direction of the second support is perpendicular to the thickness direction of the reinforcing support.

[0015] As an optional implementation, the two ends of the reinforcing bracket are connected to the main body. Along the length of the main body, the first end of the second bracket is closer to the first bracket than the second end of the second bracket, and the end of the reinforcing bracket is farther away from the first end of the first bracket than the first end of the second bracket.

[0016] As an optional implementation, the measuring tube has a U-shaped structure, forming a U-shaped space between itself and the main body, with the reinforcing bracket located within the U-shaped space; the main body has a wire-passing hole, and the first end of the first bracket and the first end of the second bracket are welded to the wall of the wire-passing hole.

[0017] As an alternative implementation, the reinforcing bracket is constructed as a plate-like structure with multiple bends, with the first bracket and the second bracket connected to the ends of the bends.

[0018] As an optional implementation, the distance L from the connection point of the reinforcing bracket on the first bracket to the second end of the first bracket and the length L0 of the first bracket satisfy the following relationship: 0.3 < L / L0 < 0.7.

[0019] As an alternative implementation, the ratio of the length A to the width B of the reinforcing bracket satisfies the following relationship: 1 < A / B < 30.

[0020] As an optional implementation, the measuring tube includes a first measuring tube and a second measuring tube, which are spaced apart from each other and arranged opposite to each other, and an electromagnetic coil is disposed in the middle of the first measuring tube;

[0021] The vibration unit also includes a first magnet, which is disposed at a position on the second measuring tube corresponding to the electromagnetic coil. The electromagnetic coil is configured to attract or repel the first magnet when energized, thereby causing the first measuring tube and the second measuring tube to vibrate.

[0022] The detection unit has two induction coils, both of which are located on the first measuring tube and are symmetrically distributed on both sides of the electromagnetic coil. The detection unit also includes two second magnets, which are located on the second measuring tube at positions corresponding to the induction coils. The induction coils are configured to generate induced current through the second magnets.

[0023] The mass flow meter provided by this invention includes a main body, a housing, a measuring tube, a vibration unit, a detection unit, and a support assembly. At least a portion of the measuring tube, the vibration unit, the detection unit, and at least a portion of the support assembly are disposed within the housing. Both ends of the measuring tube are connected to the main body. The vibration unit and the detection unit are disposed within the measuring tube. The vibration unit is used to vibrate the measuring tube and includes an electromagnetic coil. The detection unit is used to detect the vibration state of the measuring tube, thereby determining the mass flow rate through the measuring tube based on the vibration state. The detection unit includes an induction coil. The support assembly includes a first support and a reinforcing support. A first end of the first support is connected to the main body, and a second end of the first support extends towards the electromagnetic coil, with a gap between the second end of the first support and the electromagnetic coil. The starting and ending wires of the electromagnetic coil are both connected to the second end of the first support and extend along the first support to the main body. The reinforcing support is constructed as a plate-like structure, with its width direction aligned with the thickness direction of the housing. The first support is connected to one side of the reinforcing support along its own width direction. The reinforcing support is connected to the main body, and the length direction of the reinforcing support forms an angle with the length direction of the first support.

[0024] The mass flow meter provided by this invention can be configured with a support assembly, which includes a first support and a reinforcing support. The wires at the start and end of the electromagnetic coil are connected to the end of the first support and then connected to the main body along the first support. This avoids interference with the vibration state of the measuring tube when the electromagnetic coil is running, thus improving the detection accuracy. At the same time, the first support is connected to one side of the reinforcing support along its own width direction, and the length direction of the reinforcing support and the length direction of the first support are at an angle. This can improve the rigidity and stability of the first support and adjust the natural frequency of the first support, thereby avoiding resonance between the first support and the measuring tube, and further improving the detection accuracy of the mass flow meter. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a first overall structure of a mass flow meter provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of a second overall structure of a mass flow meter provided in an embodiment of the present invention;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of a third overall structure of the mass flow meter provided in an embodiment of the present invention;

[0030] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0031] Figure 6 for Figure 4 The main view;

[0032] Figure 7 This is a schematic diagram of the reinforcing bracket in the mass flow meter provided in an embodiment of the present invention;

[0033] Figure 8 for Figure 7 The main view;

[0034] Figure 9 for Figure 7 Top view.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Mass flow meter; 110. Main body; 120. Housing; 130. Measuring tube; 131. First measuring tube; 132. Second measuring tube; 140. Vibration unit; 141. Electromagnetic coil; 142. First magnet; 150. Detection unit; 151. Induction coil; 152. Second magnet; 160. Support assembly; 161. First support; 162. Reinforcing support; 1621. Notch; 1622. Bending part; 163. Second support. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In this application, the terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” “outer,” “vertical,” “horizontal,” “lateral,” and “longitudinal” indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or to be constructed and operated in a specific orientation.

[0039] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0040] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0041] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0042] Currently, there are several common methods for routing the internal coil wiring of mass flow meters. For example, the wires leading from both ends of the coil can be glued to the wall of the measuring tube, and then run along the tube wall into the main circuit. This method adds weight to the measuring tube due to the weight of the wires and glue, thus affecting the flow meter's measurement accuracy. Another method is to glue the wires leading from both ends of the coil to the inside of the protective housing and run them along the inside of the housing into the main circuit. However, this method is prone to causing the insulation layer outside the wires to melt due to heat during subsequent sealing and soldering of the protective housing, thereby reducing the product's reliability.

[0043] In view of this, the present invention provides a mass flow meter 100. The mass flow meter 100 can be configured with a support assembly 160, which includes a first support 161 and a reinforcing support 162. The wires of the starting and ending ends of the electromagnetic coil 141 are connected to the end of the first support 161 and connected to the main body 110 along the first support 161. This avoids interference with the vibration state of the measuring tube 130 when the electromagnetic coil 141 is running, thus improving the detection accuracy. At the same time, the first support 161 is connected to one side of the reinforcing support 162 along its own width direction, and the width direction of the reinforcing support 162 and the length direction of the first support 161 form an angle. The stiffness and stability of the first support 161 can be improved by the reinforcing support 162, and the natural frequency of the first support 161 can be adjusted by the reinforcing support 162, thereby avoiding resonance between the first support 161 and the measuring tube 130, and further improving the detection accuracy of the mass flow meter 100.

[0044] You can refer to this. Figures 1 to 9This invention provides a mass flow meter 100, including a main body 110, a housing 120, a measuring tube 130, a vibration unit 140, a detection unit 150, and a support assembly 160. At least a portion of the measuring tube 130, the vibration unit 140, the detection unit 150, and at least a portion of the support assembly 160 are disposed within the housing 120. The two ends of the measuring tube 130 are connected to the main body 110. The vibration unit 140 and the detection unit 150 are disposed within the measuring tube 130. The vibration unit 140 is used to vibrate the measuring tube 130 and includes an electromagnetic coil 141. The detection unit 150 is used to detect the vibration state of the measuring tube 130, thereby determining the mass flow rate through the measuring tube 130 based on the vibration state. The detection unit 150 includes an induction coil 151. The support assembly... Component 160 includes a first bracket 161 and a reinforcing bracket 162. The first end of the first bracket 161 is connected to the main body 110, and the second end of the first bracket 161 extends toward the electromagnetic coil 141. There is a gap between the second end of the first bracket 161 and the electromagnetic coil 141. The starting end wire and the ending end wire of the electromagnetic coil 141 are both connected to the second end of the first bracket 161 and extend along the first bracket 161 to the main body 110. The reinforcing bracket 162 is constructed as a plate-like structure. The width direction of the reinforcing bracket 162 is consistent with the thickness direction of the outer shell 120. The first bracket 161 is connected to one side of the reinforcing bracket 162 along its own width direction. The reinforcing bracket 162 is connected to the main body 110, and there is an angle between the length direction of the reinforcing bracket 162 and the length direction of the first bracket 161.

[0045] It is understood that the main body 110 has a circuit structure, and the electromagnetic coil 141 can be electrically connected to the circuit structure of the main body 110 along the first support 161, thereby realizing the function of powering the electromagnetic coil 141.

[0046] Specifically, the vibration state of the measuring tube 130 can be detected by measuring the phase difference of vibration at different positions on the measuring tube 130, thereby calculating the mass flow rate of the fluid flowing through the measuring tube 130 based on the phase difference.

[0047] Specifically, the wires extending from both ends of the electromagnetic coil 141 can be fixed to the second end of the first bracket 161 by welding. The wires can be fixed and extended along the first bracket 161 by welding or gluing, so that the wires are connected to the circuit structure of the main body 110. It can be understood that when welding the wires of the electromagnetic coil 141 to the second end of the first bracket 161, the length of the flying wire should not be too long or too short. If the flying wire is too short, it will exert a force on the measuring tube 130 during vibration. If the flying wire is too long, the mass of the suspended flying wire will affect the vibration of the measuring tube 130 during vibration. Therefore, both too short and too long flying wires will affect the accuracy of the measurement.

[0048] The suspended wire portion between the electromagnetic coil 141 and the second end of the first bracket 161 can form a first flying wire. The distance between the second end of the first bracket 161 and the electromagnetic coil 141 is denoted as the first distance. The length L1 of the first flying wire and the first distance S1 can satisfy the following relationship: 1.05 < L1 / S1 < 1.5. In this way, the flying wire can be appropriately taut, thus improving the detection accuracy.

[0049] The mass flow meter 100 provided in this embodiment of the invention can be configured with a support assembly 160, which includes a first support 161 and a reinforcing support 162. The wires of the starting and ending ends of the electromagnetic coil 141 are connected to the end of the first support 161 and connected to the main body 110 along the first support 161. This avoids interference with the vibration state of the measuring tube 130 when the electromagnetic coil 141 is running, thus improving the detection accuracy. At the same time, the first support 161 is connected to one side of the reinforcing support 162 along its own width direction, and the length direction of the reinforcing support 162 and the length direction of the first support 161 are at an angle. The stiffness and stability of the first support 161 can be improved by the reinforcing support 162, and the natural frequency of the first support 161 can be adjusted by the reinforcing support 162, thereby avoiding resonance between the first support 161 and the measuring tube 130, and further improving the detection accuracy of the mass flow meter 100.

[0050] In the above embodiments, the support assembly 160 may further include a second support 163. The first end of the second support 163 is connected to the main body 110, and the second end of the second support 163 extends toward the induction coil 151. There is a gap between the second end of the second support 163 and the induction coil 151. The starting end wire and the ending end wire of the induction coil 151 are both connected to the second end of the second support 163 and extend along the second support 163 to the main body 110. There is a gap between the first support 161 and the second support 163 along the thickness direction of the outer shell 120. By setting the second bracket 163, the wires of the induction coil 151 in the detection unit 150 can be routed along the second bracket 163 to the main body 110, avoiding the influence of the induction coil 151's routing on the vibration state of the measuring tube 130, further improving the detection accuracy of the mass flow meter 100. This design also creates a gap between the first bracket 161 and the second bracket 163 along the thickness direction of the outer shell 120, allowing the first bracket 161, the second bracket 163, and the reinforcing bracket 162 to form a more stable overall structure in the thickness direction of the shell. Specifically, as... Figure 2 and Figure 6As shown, one side of the reinforcing bracket 162 may have a notch 1621, into which the first bracket 161 can be inserted, thereby offsetting the second bracket 163 along the width direction (thickness direction of the shell) of the reinforcing bracket 162. Moreover, the interaction between the first bracket 161 and the reinforcing bracket 162 can make the entire bracket assembly 160 form a more stable structure in the length direction (length direction of the main body) of the reinforcing bracket.

[0051] Similarly, the suspended wire portion between the second end of the induction coil 151 and the second end of the second support 163 can be formed into a second flying wire. The distance between the second end of the second support 163 and the induction coil 151 is denoted as the second distance. The length L2 of the second flying wire and the second distance S2 can satisfy the following relationship: 1.05 < L2 / S2 < 1.5. The effect is the same as above, and will not be elaborated here.

[0052] In the above embodiment, there may be two induction coils 151, which are symmetrically distributed on both sides of the electromagnetic coil 141. The support assembly 160 also includes two second supports 163. The first end of the second support 163 is connected to the main body 110, and the second end of the second support 163 extends toward the corresponding induction coil 151. There is a gap between the second end of the second support 163 and the corresponding induction coil 151. The starting end wire and the ending end wire of the corresponding induction coil 151 are both connected to the second end of the second support 163 and extend along the second support 163 to the main body 110. The length directions of the two second supports 163 and the first support 161 are respectively set at an angle, such as... Figure 2 As shown, there are included angles between the second support 163 and the second support 163, and between the first support 161 and the second support 163. By arranging the first support 161 and the second support 163 in this way, the stiffness of the support assembly 160 can be increased without increasing the weight of the support assembly 160, thereby increasing the natural frequency of the support assembly 160.

[0053] In the above embodiments, the length direction of the first support 161 can be perpendicular to the length direction of the main body 110, and the two second supports 163 can be symmetrically arranged relative to the first support 161. The length directions of the two second supports 163 and the length direction of the main body 110 have an angle of less than 90°, thereby improving the structural stiffness of the support assembly 160 and increasing the natural frequency of the support assembly 160.

[0054] Specifically, the second ends of the first support 161 and the second ends of the second support 163 can be located at different positions on the measuring tube 130. For example, the second ends of the first support 161 and the second ends of the second support 163 can be located on one side of the measuring tube 130. Specifically, the second ends of the first support 161 and the second ends of the second support 163 can be located on the front or rear side of the measuring tube 130, or on the inner side of the measuring tube 130, or extending to the outer side of the measuring tube 130. This arrangement can minimize interference between the end leads of the electromagnetic coil 141 or the induction coil 151 and the measuring tube 130, thus helping to improve detection accuracy.

[0055] In the above embodiment, there may be two induction coils 151, which are symmetrically distributed on both sides of the electromagnetic coil 141. The support assembly 160 also includes two second supports 163. The first end of the second support 163 is connected to the main body 110, and the second end of the second support 163 extends toward the corresponding induction coil 151. There is a gap between the second end of the second support 163 and the corresponding induction coil 151. The starting end wire and the ending end wire of the corresponding induction coil 151 are both connected to the second end of the second support 163 and extend along the second support 163 to the main body 110. The thickness direction of the second support 163 is perpendicular to the thickness direction of the reinforcing support 162, so that the swaying direction of the second support 163 is perpendicular to the swaying direction of the reinforcing support 162, thereby improving the structural rigidity of the second support 163 and thus increasing the natural frequency of the second support 163.

[0056] In the above embodiment, the two ends of the reinforcing bracket 162 can be connected to the main body 110. Along the length direction of the main body 110, the first end of the second bracket 163 is closer to the first bracket 161 than the second end of the second bracket 163, and the end of the reinforcing bracket 162 is farther away from the first end of the first bracket 161 than the first end of the second bracket 163. In this way, the structure of the reinforcing bracket 162 and the second bracket 163 can be more compact and stable, which can not only save space, but also further improve the stiffness and natural frequency of the second bracket 163.

[0057] In the above embodiment, the measuring tube 130 can be U-shaped, forming a U-shaped space with the main body 110, and the reinforcing bracket 162 is located within the U-shaped space; the main body 110 has a wire-passing hole, and the first end of the first bracket 161 and the first end of the second bracket 163 are welded to the wall of the wire-passing hole, wherein there can be one or more wire-passing holes. The U-shaped measuring tube 130 can more intuitively and accurately reflect the vibration status of the measuring tube 130, and also facilitates the setting and detection of the detection unit 150; the electromagnetic coil 141 and the induction coil 151 can respectively pass through the wire-passing hole along the first bracket 161 and the second bracket 163, thereby connecting with the circuit inside the main body 110.

[0058] In the above embodiments, the reinforcing bracket 162 can be constructed as a plate-like structure with multiple bends 1622, and the first bracket 161 and the second bracket 163 are connected to the ends of the bends 1622. The reinforcing bracket 162 is formed by bending a complete sheet of material, which can improve the rigidity of the reinforcing bracket 162 and the reliability of adjusting the natural frequencies of the first bracket 161 and the second bracket 163. Simultaneously, the first bracket 161 and the second bracket 163 are connected at the bends 1622, and the bracket assembly 160 has multiple triangular holes, allowing the first bracket 161, the second bracket 163, and the reinforcing bracket 162 to form a stable triangular structure, which can improve the rigidity of the reinforcing bracket 162 at the bends 1622 to a certain extent.

[0059] In the above embodiments, the distance L from the connection point of the reinforcing bracket 162 on the first bracket 161 to the second end of the first bracket 161 and the length L0 of the first bracket 161 can satisfy the following relationship: 0.3 < L / L0 < 0.7. It is understood that when the connection point of the reinforcing bracket 162 on the first bracket 161 changes, the length from that connection point to the free end of the first bracket 161 will change accordingly, thus affecting the natural frequency of the first bracket 161. If L / L is too large or too small, the natural frequency of the first bracket 161 and the natural frequency of the measuring tube 130 may become close, thus creating a risk of resonance between them. Therefore, ensuring 0.3 < L / L < 0.7 can prevent resonance between the first bracket 161 and the measuring tube 130, thereby further improving the detection accuracy of the detection unit 150.

[0060] In the above embodiments, the ratio of the length A to the width B of the reinforcing bracket 162 can satisfy the following relationship: 1 < A / B < 30. It can be understood that by controlling the ratio of the length to the width of the reinforcing bracket 162, the degree of influence of the reinforcing bracket 162 on the natural frequency of the first bracket 161 can be controlled. If the length-to-width ratio of the reinforcing bracket 162 is too small or too large, it will be detrimental to adjusting the natural frequency of the first bracket 161.

[0061] In the above embodiments, the measuring tube 130 includes a first measuring tube 131 and a second measuring tube 132, which are spaced apart from each other and arranged opposite to each other. An electromagnetic coil 141 is disposed in the middle of the first measuring tube 131. The vibration unit 140 also includes a first magnet 142, which is disposed in the second measuring tube 132 at a position corresponding to the electromagnetic coil 141. The electromagnetic coil 141 is configured to attract or repel the first magnet 142 when energized, thereby causing the first measuring tube 131 and the second measuring tube 132 to vibrate. There are two induction coils 151, both of which are disposed in the first measuring tube 131 and are symmetrically distributed on both sides of the electromagnetic coil 141. The detection unit 150 also includes two second magnets 152, which are disposed in the second measuring tube 132 at a position corresponding to the induction coils 151. The induction coils 151 are configured to generate an induced current through the second magnets 152. It can be understood that a periodically changing current can be passed through the electromagnetic coil 141, causing the magnetic poles of the electromagnetic coil 141 to undergo periodic changes. This results in a periodic switching between mutual attraction and repulsion between the electromagnetic coil 141 and the first magnet 142, causing the first measuring tube 131 and the second measuring tube 132 to vibrate periodically simultaneously. Specifically, the first measuring tube 131 and the second measuring tube 132 can be parallel to each other. When the first measuring tube 131 and the second measuring tube 132 vibrate, the induction coil 151 set on the first measuring tube 131 and the second magnet 152 set on the second measuring tube 132 will also move accordingly. As a result, the magnetic field generated by the second magnet 152 will change at the induction coil 151, thereby generating an induced current in the induction coil 151. Furthermore, when fluid passes through the measuring tube 130, it will cause a certain degree of torsion in the measuring tube 130, resulting in a phase deviation in the vibration of the two induction coils 151 set on both sides of the electromagnetic coil 141. This phase deviation can be used to indirectly calculate the mass flow rate of the fluid currently flowing through the measuring tube 130.

[0062] In the above embodiments, both the first bracket 161 and the second bracket 163 may include a bracket body and a terminal block. The first end of the bracket body is connected to the main body 110, and the terminal block is rotatably connected to the second end of the bracket body. The electromagnetic coil 141 and the induction coil 151 are both connected to their respective terminal blocks, so that the tension of the flying wire (the suspended wire portion of the electromagnetic coil 141 or the induction coil 151) can be adjusted by rotating the terminal block. Specifically, the terminal block can be bolted to the bracket body. After adjusting the tension of the flying wire, the bolt can be tightened to fix the terminal block and the bracket body together, preventing changes in the tension of the flying wire.

[0063] In the above embodiments, the first support 161 and the second support 163 can be made of stainless steel or aluminum alloy with an elastic modulus greater than 10 GPa. If the elastic modulus of the first support 161 and the second support 163 is too small, it will lower their natural frequencies and increase the risk of resonance between the first support 161, the second support 163, and the measuring tube 130. Specifically, the first support 161 and the second support 163 can be made of stainless steel or aluminum alloy. Stainless steel and aluminum alloy not only have high elastic modulus, which helps to increase the natural frequencies of the first support 161 and the second support 163, but also have high structural strength, making the structure more stable and reliable.

[0064] The mass flow meter 100 provided in this embodiment of the invention includes a main body 110, a housing 120, a measuring tube 130, a vibration unit 140, a detection unit 150, and a support assembly 160. At least a portion of the measuring tube 130, the vibration unit 140, the detection unit 150, and at least a portion of the support assembly 160 are disposed within the housing 120. Both ends of the measuring tube 130 are connected to the main body 110. The vibration unit 140 and the detection unit 150 are disposed within the measuring tube 130. The vibration unit 140 is used to vibrate the measuring tube 130 and includes an electromagnetic coil 141. The detection unit 150 is used to detect the vibration state of the measuring tube 130, thereby determining the mass flow rate through the measuring tube 130 based on the vibration state. The detection unit 150 includes an induction coil 151. The support assembly... 160 includes a first support 161 and a reinforcing support 162. The first end of the first support 161 is connected to the main body 110, and the second end of the first support 161 extends toward the electromagnetic coil 141. There is a gap between the second end of the first support 161 and the electromagnetic coil 141. The starting end wire and the ending end wire of the electromagnetic coil 141 are both connected to the second end of the first support 161 and extend along the first support 161 to the main body 110. The reinforcing support 162 is constructed as a plate-like structure. The width direction of the reinforcing support 162 is consistent with the thickness direction of the outer shell 120. The first support 161 is connected to one side of the reinforcing support 162 along its own width direction. The reinforcing support 162 is connected to the main body 110, and there is an angle between the length direction of the reinforcing support 162 and the length direction of the first support 161.

[0065] The mass flow meter 100 provided in this embodiment of the invention can be configured with a support assembly 160, which includes a first support 161 and a reinforcing support 162. The wires of the starting and ending ends of the electromagnetic coil 141 are connected to the end of the first support 161 and connected to the main body 110 along the first support 161. This avoids interference with the vibration state of the measuring tube 130 when the electromagnetic coil 141 is running, thus improving the detection accuracy. At the same time, the first support 161 is connected to one side of the reinforcing support 162 along its own width direction, and the length direction of the reinforcing support 162 and the length direction of the first support 161 are at an angle. The stiffness and stability of the first support 161 can be improved by the reinforcing support 162, and the natural frequency of the first support 161 can be adjusted by the reinforcing support 162, thereby avoiding resonance between the first support 161 and the measuring tube 130, and further improving the detection accuracy of the mass flow meter 100.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mass flow meter characterized by, The device comprises a main body, a shell, a measuring tube, a vibration unit, a detection unit and a support assembly, at least part of the measuring tube, the vibration unit, the detection unit and at least part of the support assembly are arranged in the shell; Two ends of the measuring tube are connected to the main body, the vibration unit and the detection unit are arranged in the measuring tube, the vibration unit is used for vibrating the measuring tube, the vibration unit comprises an electromagnetic coil, the detection unit is used for detecting the vibration state of the measuring tube, so as to obtain the mass flow through the measuring tube according to the vibration state, and the detection unit comprises an induction coil; The support assembly comprises a first support and a reinforcing support, a first end of the first support is connected to the main body, a second end of the first support extends to the electromagnetic coil, and there is a spacing between the second end of the first support and the electromagnetic coil, the starting end wire and the terminal wire of the electromagnetic coil are connected to the second end of the first support and extend to the main body along the first support, the reinforcing support is configured as a plate structure, the width direction of the reinforcing support is consistent with the thickness direction of the shell, the first support is connected to one side of the reinforcing support along the width direction of the reinforcing support, the reinforcing support is connected to the main body, and the length direction of the reinforcing support and the length direction of the first support have an included angle.

2. The mass flow meter of claim 1, wherein, The support assembly further comprises a second support, a first end of the second support is connected to the main body, a second end of the second support extends to the induction coil, and there is a spacing between the second end of the second support and the induction coil, the starting end wire and the terminal wire of the induction coil are connected to the second end of the second support and extend to the main body along the second support, and there is a spacing between the first support and the second support in the thickness direction of the shell.

3. The mass flow meter of claim 1, wherein, The induction coil has two, the two induction coils are symmetrically distributed on both sides of the electromagnetic coil, the support assembly further comprises two second supports, a first end of the second support is connected to the main body, a second end of the second support extends to the corresponding induction coil, and there is a spacing between the second end of the second support and the corresponding induction coil, the starting end wire and the terminal wire of the corresponding induction coil are connected to the second end of the second support and extend to the main body along the second support, and the length directions of the two second supports and the first support are respectively arranged at an angle.

4. The mass flow meter of claim 3, wherein, The length direction of the first support is perpendicular to the length direction of the main body, the two second supports are symmetrically arranged relative to the first support, the length directions of the two second supports and the main body have an included angle, and the included angle is less than 90°; The second end of the first support and the second end of the second support are located on one side of the measuring tube, or the second end of the first support and the second end of the second support are located between the measuring tubes.

5. The mass flow meter of claim 1, wherein, The two induction coils are symmetrically distributed on two sides of the electromagnetic coil, the support assembly further comprises two second supports, the first ends of the second supports are connected to the main body, the second ends of the second supports extend to the corresponding induction coils, the second ends of the second supports and the corresponding induction coils have a spacing, the starting end wire and the terminal wire of the corresponding induction coil are connected to the second end of the second support and extend to the main body along the second support, and the thickness direction of the second support is perpendicular to the thickness direction of the reinforcing support.

6. The mass flow meter of claim 5, wherein, The two ends of the reinforcing support are connected to the main body, along the length direction of the main body, the first end of the second support is closer to the first support than the second end of the second support, and the end of the reinforcing support is farther away from the first end of the first support than the first end of the second support.

7. The mass flow meter of claim 6, wherein, The measuring tube has a U-shaped structure to form a U-shaped space with the main body, and the reinforcing support is located in the U-shaped space; the main body has a wire hole, and the first end of the first support and the first end of the second support are welded to the hole wall of the wire hole.

8. The mass flow meter of any of claims 2-7, wherein, The reinforcing support is configured as a plate-shaped structure with a plurality of bending portions, and the first support and the second support are connected to the end portions of the bending portions.

9. The mass flow meter of any one of claims 1-7, wherein, The distance L from the connection point of the reinforcing support on the first support to the second end of the first support and the length L0 of the first support satisfy the following relationship: 0.3 10. The mass flow meter of any one of claims 1-7, wherein, The ratio of the length A of the reinforcing support to the width B satisfies the following relationship: 1 11. The mass flow meter of any one of claims 1-7, wherein, The measuring tube comprises a first measuring tube and a second measuring tube, the first measuring tube and the second measuring tube are spaced apart and arranged opposite to each other, and the electromagnetic coil is arranged at the middle portion of the first measuring tube; The vibration unit further comprises a first magnet, the first magnet is arranged at a position of the second measuring tube corresponding to the electromagnetic coil, and the electromagnetic coil is configured to attract or repel the first magnet when energized, so as to vibrate the first measuring tube and the second measuring tube; The two induction coils are symmetrically distributed on two sides of the electromagnetic coil, the support assembly further comprises two second supports, the first ends of the second supports are connected to the main body, the second ends of the second supports extend to the corresponding induction coils, the second ends of the second supports and the corresponding induction coils have a spacing, the starting end wire and the terminal wire of the corresponding induction coil are connected to the second end of the second support and extend to the main body along the second support, and the thickness direction of the second support is perpendicular to the thickness direction of the reinforcing support. The two ends of the reinforcing support are connected to the main body, along the length direction of the main body, the first end of the second support is closer to the first support than the second end of the second support, and the end of the reinforcing support is farther away from the first end of the first support than the first end of the second support. The measuring tube has a U-shaped structure to form a U-shaped space with the main body, and the reinforcing support is located in the U-shaped space; the main body has a wire hole, and the first end of the first support and the first end of the second support are welded to the hole wall of the wire hole. The reinforcing support is configured as a plate-shaped structure with a plurality of bending portions, and the first support and the second support are connected to the end portions of the bending portions. The distance L from the connection point of the reinforcing support on the first support to the second end of the first support and the length L0 of the first support satisfy the following relationship: 0.3 The ratio of the length A of the reinforcing support to the width B satisfies the following relationship: 1 The measuring tube comprises a first measuring tube and a second measuring tube, the first measuring tube and the second measuring tube are spaced apart and arranged opposite to each other, and the electromagnetic coil is arranged at the middle portion of the first measuring tube; The vibration unit further comprises a first magnet, the first magnet is arranged at a position of the second measuring tube corresponding to the electromagnetic coil, and the electromagnetic coil is configured to attract or repel the first magnet when energized, so as to vibrate the first measuring tube and the second measuring tube; The two induction coils are symmetrically distributed on two sides of the electromagnetic coil, the support assembly further comprises two second supports, the first ends of the second supports are connected to the main body, the second ends of the second supports extend to the corresponding induction coils, the second ends of the second supports and the corresponding induction coils have a spacing, the starting end wire and the terminal wire of the corresponding induction coil are connected to the second end of the second support and extend to the main body along the second support, and the thickness direction of the second support is perpendicular to the thickness direction of the reinforcing support.

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