Mass flow meter

Abstract

The utility model relates to the technical field of flow detection, in particular to a mass flow meter. The mass flowmeter comprises a measuring tube, a shell, a supporting tube and a supporting assembly, the shell and the supporting tube are connected and jointly define a containing cavity, at least part of the measuring tube is arranged in the containing cavity, and the two ends of the measuring tube are connected with the supporting tube; the supporting assembly is arranged in the containing cavity and comprises a first supporting piece and a second supporting piece connected with the first supporting piece, the first supporting piece is connected with the supporting pipe, and the second supporting piece is connected with the shell. According to the mass flow meter, the inherent frequency of the shell of the mass flow meter is improved under the supporting of the supporting assembly, resonance between the shell and the measuring pipe is avoided, interference to signals collected by the detection coil can be reduced, later filtering processing is facilitated, and therefore the measuring precision of the mass flow meter is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of flow detection, and particularly to a mass flowmeter. Background Art

[0002] A mass flowmeter is an instrument used to measure the mass flow rate of a fluid (liquid or gas). The mass flowmeter measures the mass flow rate of the fluid flowing in the vibrating tube based on the Coriolis effect. When the fluid passes through the vibrating tube, the inertial force of the fluid will cause the vibrating tube to twist. Detection coils installed at both ends of the vibrating tube will generate two sets of signals with different phases, and the phase difference between these two signals is proportional to the mass flow rate of the fluid flowing through the sensor.

[0003] In the prior art, the mass flowmeter further includes a housing and a connecting pipe. The vibrating tube is communicated with the connecting pipe, and the housing covers the vibrating tube. The housing is connected to the connecting pipe so that the housing protects the vibrating tube and prevents the external environment from interfering with the vibrating tube.

[0004] However, the natural frequency of the housing is relatively low, and the housing is prone to resonance with the vibrating tube. Moreover, the frequency difference between the housing and the vibrating tube is too small, which may interfere with the signals collected by the detection coils, is not conducive to subsequent filtering processing, and thus affects the measurement accuracy of the mass flowmeter. Summary of the Utility Model

[0005] This application provides a mass flowmeter. The housing of the mass flowmeter has an increased natural frequency under the support of the support assembly, avoiding resonance between the housing and the measuring tube, and can also reduce the interference received by the signals collected by the detection coils, which is conducive to subsequent filtering processing, thus ensuring the measurement accuracy of the mass flowmeter.

[0006] The mass flowmeter provided by this application includes a measuring tube, a housing, a support tube, and a support assembly. The housing is connected to the support tube and together encloses an accommodation cavity. At least part of the measuring tube is arranged in the accommodation cavity, and both ends of the measuring tube are connected to the support tube.

[0007] The support assembly is arranged in the accommodation cavity. The support assembly includes a first support member and a second support member connected to the first support member. The first support member is connected to the support tube, and the second support member is connected to the housing.

[0008] In a possible implementation manner, for the mass flowmeter provided by this application, there is an included angle between the first support member and the second support member.

[0009] In a possible implementation manner, for the mass flowmeter provided by this application, at least part of the first support member is located between the second support member and the support tube, and connecting members are provided on both sides of the second support member to be connected to both sides of the housing.

[0010] In a possible implementation, for the mass flowmeter provided by the present application, the first end of the first support member away from the support pipe extends out of the second support member, and connecting members are provided on both sides of the first support member to connect with both sides of the housing.

[0011] In a possible implementation, for the mass flowmeter provided by the present application, the first support member has a first slot, and the second support member has a second slot. The first slot and the second slot are inserted into each other to connect the first support member and the second support member.

[0012] In a possible implementation, for the mass flowmeter provided by the present application, the thickness directions of both the first support member and the second support member are perpendicular to the thickness direction of the housing. The first slot and the second slot both extend along the thickness direction of the housing, and the second slot is close to the middle of the second support member.

[0013] In a possible implementation, for the mass flowmeter provided by the present application, there are gaps between both sides of the first support member and the second support member and both sides of the housing.

[0014] And / or, the width of the first support member is equal to the width of the second support member. The depth of the first slot is half of the width of the first support member, and the depth of the second slot is half of the width of the second support member.

[0015] In a possible implementation, for the mass flowmeter provided by the present application, the first support member and the second support member are perpendicular to each other. The distance between the position where the first support member is connected to the housing and the first slot is the same as the distance between the position where the second support member is connected to the housing and the second slot.

[0016] In a possible implementation, for the mass flowmeter provided by the present application, the number of connecting members is at least two pairs. The paired connecting members are symmetrically arranged on opposite sides of the second support member, and the connecting members on the same side of the second support member are symmetrically arranged with respect to the first support member.

[0017] In a possible implementation, for the mass flowmeter provided by the present application, the connecting member has a plug-in portion, and the second support member has a first notch. The plug-in portion is inserted into the second support member along the first notch.

[0018] The mass flowmeter provided by the present application is provided with a measuring tube, a housing, a support tube and a support assembly. The housing is connected to the support tube and together they enclose an accommodation cavity. At least part of the measuring tube is arranged in the accommodation cavity. Both ends of the measuring tube are connected to the support tube. The housing provides protection for the measuring tube to prevent interference from the external environment to the measuring tube. The support assembly is arranged in the accommodation cavity. The support assembly includes a first support member and a second support member connected to the first support member. The first support member is connected to the support tube, and the second support member is connected to the housing. Thus, the support assembly provides support for the housing to improve the stiffness of the housing. The housing of the mass flowmeter has an increased natural frequency under the support of the support assembly, avoiding resonance between the housing and the measuring tube, and can also reduce the interference received by the detection coil when collecting signals, which is beneficial to subsequent filtering processing, thereby ensuring the measurement accuracy of the mass flowmeter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of the mass flowmeter provided by the embodiment of the present application;

[0021] Figure 2 is Figure 1 partial exploded view of;

[0022] Figure 3 is Figure 1 internal structural schematic diagram of;

[0023] Figure 4 is Figure 1 partial structural schematic diagram of;

[0024] Figure 5 is Figure 4 structural schematic diagram from another angle;

[0025] Figure 6 is Figure 2 structural schematic of the support assembly in; Figure 1 ;

[0026] Figure 7 is Figure 2 structural schematic of the support assembly in; Figure 2 ;

[0027] Figure 8 is Figure 7 exploded view of;

[0028] Figure 9 is Figure 8 a schematic structural diagram of the middle connecting member.

[0029] Explanation of the reference numerals in the drawings:

[0030] 100 - measuring tube;

[0031] 200 - outer shell; 210 - first housing; 211 - avoidance hole; 220 - second housing; 230 - third housing;

[0032] 300 - support tube; 310 - flange; 320 - mounting port;

[0033] 400 - support assembly;

[0034] 410 - first support member; 411 - first slot; 412 - second notch;

[0035] 420 - second support member; 421 - second slot; 422 - first notch;

[0036] 430 - connecting member; 431 - insertion portion;

[0037] 500 - accommodation cavity.

[0038] Through the above drawings, the specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed embodiments

[0039] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0040] Secondly, it should be noted that in the description of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0041] Next, it should also be noted that in the description of the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0042] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0043] As shown in the background art, in the prior art, a mass flowmeter includes a vibrating tube, a housing, and a connecting tube. The vibrating tube is in communication with the connecting tube, and the housing covers the vibrating tube. The housing is connected to the connecting tube so that the housing protects the vibrating tube and prevents interference from the external environment to the vibrating tube.

[0044] However, the natural frequency of the housing is relatively low, and the housing is prone to resonance with the vibrating tube. Moreover, the frequency difference between the housing and the vibrating tube is too small, which may interfere with the signal collected by the detection coil and is not conducive to subsequent filtering processing, thus affecting the measurement accuracy of the mass flowmeter.

[0045] Based on this, the mass flowmeter provided by the present application is provided with a measuring tube, a housing, a support tube, and a support assembly. The housing is connected to the support tube and together they enclose an accommodation cavity. At least part of the measuring tube is arranged in the accommodation cavity, and both ends of the measuring tube are connected to the support tube. The housing provides protection for the measuring tube to prevent interference from the external environment to the measuring tube. The support assembly is arranged in the accommodation cavity. The support assembly includes a first support member and a second support member connected to the first support member. The first support member is connected to the support tube, and the second support member is connected to the housing. Thus, the support assembly provides support for the housing to improve the stiffness of the housing. The natural frequency of the housing of the mass flowmeter is increased under the support of the support assembly, avoiding resonance between the housing and the measuring tube, and also reducing the interference received by the signal collected by the detection coil, which is conducive to subsequent filtering processing, thereby ensuring the measurement accuracy of the mass flowmeter.

[0046] To make the objectives, technical solutions, and advantages of this application more clear, the following will describe the technical solutions in the embodiments of this application in more detail with reference to the accompanying drawings in the preferred embodiments of this application. In the drawings, the same or similar reference numerals represent the same or similar components or components with the same or similar functions from beginning to end. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below by referring to the drawings are exemplary and are intended to explain this application and should not be construed as a limitation to this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0047] Referring to Figures 1 to 5 As shown, the mass flowmeter provided by this application includes a measuring tube 100, a housing 200, a support tube 300, and a support assembly 400. The housing 200 is connected to the support tube 300 and together they enclose a receiving cavity 500. At least part of the measuring tube 100 is disposed in the receiving cavity 500, and both ends of the measuring tube 100 are connected to the support tube 300.

[0048] The support assembly 400 is disposed in the receiving cavity 500. The support assembly 400 includes a first support member 410 and a second support member 420 connected to the first support member 410. The first support member 410 is connected to the support tube 300, and the second support member 420 is connected to the housing 200.

[0049] It should be noted that a mass flowmeter generally further includes a driver and a sensor. The driver excites the measuring tube 100 through electromagnetic force or piezoelectric elements to vibrate it at a specific frequency. The sensors are installed at the inlet and outlet positions of the measuring tube 100 to detect the vibration conditions of the pipeline.

[0050] It should also be noted that the natural frequency refers to the natural vibration frequency of a system when it vibrates freely without the action of an external driving force. When the frequency of the external driving force approaches the natural frequency of the system, a resonance phenomenon will occur, resulting in a significant increase in the vibration amplitude of the system, which may cause structural damage or system failure.

[0051] Each physical system has its natural frequency, which depends on the physical characteristics of the system, such as mass, stiffness, and damping, etc. Among them, the natural frequency is proportional to the stiffness within a certain range. When the mass of the system remains unchanged, increasing the stiffness of the system can increase its natural frequency.

[0052] The housing 200 is connected to the support tube 300, and the support tube 300 provides support for the housing 200. Exemplarily, the housing 200 can be welded to the support tube 300.

[0053] The housing 200 and the support tube 300 together define an accommodation cavity 500. Exemplarily, the housing 200 can be integrally formed or separately formed. When the housing 200 is separately formed, the housing 200 may only include a first housing 210 and a second housing 220, and the edges of the first housing 210 and the second housing 220 are welded. The first housing 210, the second housing 220, and the support tube 300 together define the accommodation cavity 500; the housing 200 may also include a first housing 210, a second housing 220, and a third housing 230. Referring to Figure 2 As shown, the edges of both the first housing 210 and the second housing 220 are welded to the third housing 230, and the first housing 210, the second housing 220, the third housing 230, and the support tube 300 together define the accommodation cavity 500.

[0054] At least a part of the measuring tube 100 is disposed in the accommodation cavity 500, and the housing 200 provides protection for the measuring tube 100 to prevent interference from the external environment to the measuring tube 100.

[0055] Both ends of the measuring tube 100 are connected to the support tube 300. Specifically, in implementation, flanges 310 may be provided at both ends of the support tube 300, and the support tube 300 has mounting ports 320, and the measuring tube 100 communicates with the flanges 310 through the mounting ports 320.

[0056] The support assembly 400 is disposed in the accommodation cavity 500, and the accommodation cavity 500 provides an installation space for the support assembly 400.

[0057] The support assembly 400 includes a first support member 410 and a second support member 420 connected to the first support member 410. The first support member 410 is connected to the support tube 300, and the support tube 300 provides support for the first support member 410. Exemplarily, the first support member 410 may be welded to the support tube 300. The second support member 420 is connected to the housing 200, so that the support assembly 400 provides support for the housing 200 to improve the stiffness of the housing 200. The housing 200 of the mass flowmeter has an increased natural frequency under the support of the support assembly 400, avoiding resonance between the housing 200 and the measuring tube 100, and also reducing the interference received by the detection coil in collecting signals, which is beneficial for subsequent filtering processing, thereby ensuring the measurement accuracy of the mass flowmeter.

[0058] In some embodiments, referring to Figure 3 As shown, there is an included angle between the first support member 410 and the second support member 420.

[0059] Specifically, an included angle is provided between the first support member 410 and the second support member 420 (i.e., Figure 3As shown by the arrow α), it helps to disperse and transfer stress, avoid stress concentration, thereby improving the load-bearing capacity of the support assembly 400 and increasing the rigidity and stability of the support assembly 400. Exemplarily, the angle of the included angle α can be 80°, 90° or 100°, or other angles, and the present application does not limit this too much.

[0060] In some embodiments, referring to Figure 2 and Figure 6 shown, at least a part of the first support member 410 is located between the second support member 420 and the support tube 300, and connecting members 430 are provided on both sides of the second support member 420 to be connected to both sides of the outer shell 200.

[0061] At least a part of the first support member 410 is located between the second support member 420 and the support tube 300. Referring to Figure 6 shown, the second support member 420 is located in the Figure 6 positive direction of Z as shown by the arrow in the figure to enhance the stability and rigidity of the overall structure.

[0062] Connecting members 430 are provided on both sides of the second support member 420 to be connected to both sides of the outer shell 200, which can provide support for both sides of the outer shell 200 and help improve the load-bearing capacity of the support assembly 400. In a specific implementation, referring to Figure 2 and Figure 6 shown, the outer shell 200 includes a first shell 210, a second shell 220 and a third shell 230. Avoidance holes 211 are respectively provided on the first shell 210 and the second shell 220. The first shell 210 and the second shell 220 are respectively welded to the connecting member 430 through the avoidance holes 211, reducing the welding difficulty between the second support member 420 and the first shell 210 and the second shell 220, thereby improving the welding efficiency.

[0063] It should be noted that both sides of the second support member 420 can also be directly connected to both sides of the outer shell 200. Specifically, avoidance grooves matching both sides of the second support member 420 can be provided on the first shell 210 and the second shell 220. The first shell 210 is welded to one side of the second support member 420 through the avoidance groove, and the first shell 210 is welded to the support tube 300; the second shell 220 is welded to the other side of the second support member 420 through the avoidance groove, and the second shell 220 is welded to the support tube 300. Finally, the first shell 210 and the second shell 220 are respectively welded to the third shell 230.

[0064] In some embodiments, referring to Figure 2 and Figure 7 shown, the first end of the first support member 410 far from the support tube 300 extends out of the second support member 420, and connecting members 430 are provided on both sides of the first support member 410 to be connected to both sides of the outer shell 200.

[0065] The first support member 410 extends beyond the second support member 420 at the first end away from the support tube 300. Refer to Figure 7 As shown, a part of the first support member 410 is located in the Figure 7 opposite direction of Z as indicated by the arrow in the figure, and a part of the first support member 410 is located in the positive direction of Z of the second support member 420, thereby increasing the support points and further improving the stability of the support assembly 400.

[0066] Connectors 430 are provided on both sides of the first support member 410 to connect with the housing 200. Refer to Figure 5 As shown, one side of the first support member 410 along the Figure 5 positive direction of Y as indicated by the arrow in the figure is connected to the first housing 210 through the connector 430, and one side of the first support member 410 along the opposite direction of Y is connected to the second housing 220 through the connector 430. Also, since the second support member 420 is connected to the housing 200, the first support member 410 and the second support member 420 jointly provide multi-directional support for the first housing 210 and the second housing 220 to enhance the stability of the overall structure.

[0067] In some embodiments, refer to Figure 8 As shown, the first support member 410 has a first slot 411, and the second support member 420 has a second slot 421. The first slot 411 and the second slot 421 are plugged together to connect the first support member 410 and the second support member 420.

[0068] Specifically, by providing the first slot 411 on the first support member 410 and the second slot 421 on the second support member 420, and plugging the first slot 411 and the second slot 421 together, the operation is convenient, and the connection efficiency and connection stability between the first support member 410 and the second support member 420 are improved.

[0069] It should be noted that the setting positions of the first slot 411 and the second slot 421 can be determined according to the shape and size of the housing 200, and the present application does not limit this too much.

[0070] In some embodiments, refer to Figure 2 and Figure 8 As shown, the thickness directions of both the first support member 410 and the second support member 420 are perpendicular to the thickness direction of the housing 200. The first slot 411 and the second slot 421 both extend along the thickness direction of the housing 200, and the second slot 421 is close to the middle of the second support member 420.

[0071] Specifically, refer to Figure 2 As shown, the thickness direction of the first support member 410 is Figure 2The X direction indicated by the arrow in the figure, and the thickness direction of the second support member 420 is Figure 2 The Z direction indicated by the arrow in the figure, and the thickness direction of the housing 200 is Figure 2 The Y direction indicated by the arrow in the figure. The thickness directions of the first support member 410 and the second support member 420 are both perpendicular to the thickness direction of the housing 200, that is, both the X direction and the Z direction are perpendicular to the Y direction, which can further improve the stiffness of the housing 200.

[0072] It can be understood that both the first slot 411 and the second slot 421 extend along the thickness direction of the housing 200, that is, the first slot 411 and the second slot 421 extend along the positive direction or the negative direction of Y respectively, so that the first support member 410 and the second support member 420 are inserted into each other along the Y direction, and the first support member 410 and the second support member 420 support it in the thickness direction of the housing 200.

[0073] It can be understood that the second slot 421 is close to the middle of the second support member 420, so that the connection point of the first support member 410 and the second support member 420 is close to the middle of the second support member 420, so that the connection point of the first support member 410 and the second support member 420 is in a position where the force is relatively uniform, so as to enhance the stability of the connection.

[0074] In some embodiments, there are gaps between both sides of the first support member 410 and the second support member 420 and both sides of the housing 200.

[0075] And / or, the width of the first support member 410 is equal to the width of the second support member 420. The depth of the first slot 411 is half of the width of the first support member 410, and the depth of the second slot 421 is half of the width of the second support member 420.

[0076] It can be understood that setting the gap can provide a certain buffer space, which helps to absorb and disperse external impacts or vibrations and protect the internal structure from damage.

[0077] Specifically, the width directions of both the first support member 410 and the second support member 420 are Figure 2 The Y direction indicated by the arrow in the figure. The width of the first support member 410 is equal to the width of the second support member 420. The depth of the first slot 411 is half of the width of the first support member 410, and the depth of the second slot 421 is half of the width of the second support member 420, so that after the first slot 411 and the second slot 421 are inserted into each other, the distances between both sides of the first support member 410 and both sides of the second support member 420 and the housing 200 are equal.

[0078] In some embodiments, referring to Figure 3As shown, the first support member 410 and the second support member 420 are perpendicular to each other. The distance between the position where the first support member 410 is connected to the housing 200 and the first slot 411 is the same as the distance between the position where the second support member 420 is connected to the housing 200 and the second slot 421.

[0079] Specifically, the extending direction of the first support member 410 is Figure 3 the Z direction indicated by the arrow in Figure 3 and the extending direction of the second support member 420 is the X direction indicated by the arrow in

[0080] The second support member 420 is perpendicular to the first support member 410, that is, the X direction and the Z direction are perpendicular to each other, which can improve the stability of the support assembly 400, so that the support assembly 400 provides better support for the housing 200, and can effectively disperse and counteract external forces.

[0081] It can be understood that the distance between the position where the first support member 410 is connected to the housing 200 and the first slot 411 is the same as the distance between the position where the second support member 420 is connected to the housing 200 and the second slot 421, which can ensure the symmetry of the whole structure and further improve the stability.

[0082] In some embodiments, referring to Figure 2 and Figure 6 as shown, the number of the connecting members 430 is at least two pairs. The paired connecting members 430 are symmetrically arranged on the opposite sides of the second support member 420, and the connecting members 430 on the same side of the second support member 420 are symmetrically arranged with respect to the first support member 410.

[0083] It can be understood that, referring to Figure 6 as shown, the paired connecting members 430 are symmetrically arranged on the opposite sides of the second support member 420, which can evenly distribute the load and avoid uneven stress on one side.

[0084] Furthermore, the connecting members 430 on the same side of the second support member 420 are symmetrically arranged with respect to the first support member 410, so that the stress distribution is more uniform, avoiding concentrated stress points and further improving the stability.

[0085] It should be noted that when both opposite sides of the first support member 410 are connected to the housing 200, referring to Figure 7 as shown, the number of the connecting members 430 can be four pairs, and two pairs of the connecting members 430 are respectively inserted on the first support member 410 and the second support member 420. The paired connecting members 430 are symmetrically arranged on both opposite sides of the first support member 410, and the two connecting members 430 on the same side of the first support member 410 are symmetrically arranged with respect to the second support member 420.

[0086] It should also be noted that the number of the connecting members 430 can be determined according to the shape and size of the housing 200, and the present application does not impose too many restrictions on this.

[0087] In some embodiments, referring to Figure 8 and Figure 9 as shown, the connecting member 430 has a plugging portion 431, and the second support member 420 has a first notch 422. The plugging portion 431 is plugged into the second support member 420 along the first notch 422.

[0088] It can be understood that by providing the plugging portion 431 on the connecting member 430 and the first notch 422 on the second support member 420, and the plugging portion 431 is plugged into the second support member 420 along the first notch 422, the operation is convenient and the connection efficiency is further improved.

[0089] In some embodiments, referring to Figure 5 and Figure 6 as shown, the second end of the first support member 410 has a second notch 412 that matches the outer sidewall of the support tube 300, and the second notch 412 is connected to the support tube 300.

[0090] It can be understood that the second end of the first support member 410 has a second notch 412 that matches the outer sidewall of the support tube 300, and the first support member 410 is welded to the support tube 300 through the second notch 412, which improves the conformity between the first support member 410 and the support tube 300, thereby improving the connection strength between the support assembly 400 and the support tube 300. Exemplarily, when the cross-section of the support tube 300 is circular, the second notch 412 on the first support member 410 is arc-shaped that matches the outer sidewall of the support tube 300; when the cross-section of the support tube 300 is rectangular, the second notch 412 on the first support member 410 is rectangular that matches the outer sidewall of the support tube 300. The shape and size of the second notch 412 only need to match the outer sidewall of the support tube 300, and the present application does not impose too many restrictions on this.

[0091] Those skilled in the art can understand that for the mass flowmeter provided in this application, by setting the measuring tube 100, the housing 200, the support tube 300 and the support assembly 400, the housing 200 is connected to the support tube 300 and they jointly enclose an accommodation cavity 500. At least part of the measuring tube 100 is arranged in the accommodation cavity 500. Both ends of the measuring tube 100 are connected to the support tube 300. The housing 200 provides protection for the measuring tube 100 to prevent the external environment from interfering with the measuring tube 100. The support assembly 400 is arranged in the accommodation cavity 500. The support assembly 400 includes a first support member 410 and a second support member 420 connected to the first support member 410. The first support member 410 is connected to the support tube 300, and the second support member 420 is connected to the housing 200. Thus, the support assembly 400 provides support for the housing 200 to improve the stiffness of the housing 200. The housing 200 of the mass flowmeter has an increased natural frequency under the support of the support assembly 400, avoiding resonance between the housing 200 and the measuring tube 100, and can also reduce the interference received by the detection coil when collecting signals, which is beneficial to subsequent filtering processing, thereby ensuring the measurement accuracy of the mass flowmeter.

[0092] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0093] It can be understood that the various numerical numbers involved in the embodiments of this application are only for the convenience of description and are not used to limit the scope of the embodiments of this application.

[0094] So far, the technical solutions of this application have been described in combination with the preferred embodiments shown in the drawings. However, those skilled in the art can easily understand that the protection scope of this application is obviously not limited to these specific embodiments. Without departing from the principle of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this application.

Claims

1. A mass flow meter, characterized in that: It comprises a measuring tube, a housing, a supporting tube and a supporting assembly, wherein the housing is connected to the supporting tube and together they form a receiving cavity, at least part of the measuring tube is arranged in the receiving cavity, and both ends of the measuring tube are connected to the supporting tube; The support assembly is disposed in the accommodating cavity, and includes a first support member and a second support member connected to the first support member, the first support member is connected to the support tube, and the second support member is connected to the shell.

2. The mass flow meter according to claim 1, characterized in that: An included angle is formed between the first supporting member and the second supporting member.

3. The mass flow meter according to claim 2, characterized in that: At least part of the first support member is located between the second support member and the support tube, and both sides of the second support member are provided with connecting members connected to both sides of the shell.

4. The mass flow meter according to claim 2, characterized in that: The first end of the first support member away from the support tube extends out of the second support member, and both sides of the first support member are provided with connecting members connected to both sides of the shell.

5. The mass flow meter according to any one of claims 1 to 4, characterized in that: The first supporting member has a first slot, the second supporting member has a second slot, and the first slot is plugged into the second slot to connect the first supporting member and the second supporting member.

6. The mass flow meter according to claim 5, characterized in that: The thickness directions of the first support member and the second support member are both perpendicular to the thickness direction of the shell, the first slot and the second slot both extend along the thickness direction of the shell, and the second slot is close to the middle of the second support member.

7. The mass flow meter according to claim 5, characterized in that: Both sides of the first support member and the second support member have gaps with both sides of the housing; and / or, The width of the first support member is equal to the width of the second support member, the depth of the first slot is half of the width of the first support member, and the depth of the second slot is half of the width of the second support member.

8. The mass flow meter according to claim 5, characterized in that: The first support member and the second support member are perpendicular to each other, and the distance between the position where the first support member is connected to the shell and the first slot is the same as the distance between the position where the second support member is connected to the shell and the second slot.

9. The mass flow meter according to claim 3, characterized in that: The number of the connecting members is at least two pairs, and the connecting members in pairs are symmetrically arranged on two opposite sides of the second supporting member, and the connecting members located on the same side of the second supporting member are symmetrically arranged relative to the first supporting member.

10. The mass flow meter according to claim 9, characterized in that The connecting member is provided with an inserting portion, the second supporting member is provided with a first notch, and the inserting portion is inserted into the second supporting member along the first notch.

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