Mounting seat of mass flow meter and mass flow meter

Abstract

The utility model relates to the technical field of flow detection, in particular to a mounting seat of a mass flow meter and the mass flow meter. The mounting base of the mass flow meter comprises a first connecting piece and at least two second connecting pieces, a first direction and a second direction are defined to form an angle, and the second connecting pieces are connected to the same side of the first connecting piece in the first direction; the second connecting piece is provided with an extending part extending out of the first connecting piece in the second direction, the first connecting piece is used for being connected with a sensor of the mass flow meter, and the extending part is used for being welded to a measuring pipe of the mass flow meter. According to the mounting base of the mass flow meter and the mass flow meter, brazing filler metal accumulation can be reduced, the mounting base is prevented from inclining, the mounting angle of a sensor is prevented from deviating, and therefore the measuring precision of the mass flow meter is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of flow detection, and particularly relates to a mounting base for a mass flowmeter and a mass flowmeter. Background Art

[0002] A mass flowmeter is an instrument for measuring the mass flow rate of a fluid (liquid or gas). The mass flowmeter measures the mass flow rate of the fluid flowing in a vibrating tube based on the Coriolis effect. When the fluid passes through the vibrating tube, the inertial force of the fluid causes the vibrating tube to twist, and the degree of twist is proportional to the mass flow rate of the fluid. Sensors are provided on the vibrating tube to detect the phase of the vibrating tube. The sensors are generally connected to the vibrating tube through a fixing base.

[0003] In the prior art, the bottom of the fixing base has continuously arranged connecting parts. First, the sensor is installed on the fixing base, and then the connecting parts of the fixing base are continuously welded to the vibrating tube by argon arc welding or laser welding, and then brazing is used for reinforcement.

[0004] However, the brazing filler metal is prone to accumulation, causing the fixing base to tilt, resulting in a deviation in the installation angle of the sensor, thereby affecting the measurement accuracy of the mass flowmeter. Summary of the Utility Model

[0005] The present application provides a mounting base for a mass flowmeter and a mass flowmeter, which can reduce the accumulation of brazing filler metal, avoid the tilting of the mounting base, prevent the deviation of the installation angle of the sensor, and thus ensure the measurement accuracy of the mass flowmeter.

[0006] In a first aspect, the mounting base for a mass flowmeter provided by the present application includes a first connecting member and at least two second connecting members. It is defined that a first direction and a second direction are arranged at an angle, and each second connecting member is connected to the same side of the first connecting member along the first direction.

[0007] The second connecting member has an extension portion extending out of the first connecting member along the second direction. The first connecting member is used to connect with the sensor of the mass flowmeter, and the extension portion is used to be welded to the measuring tube of the mass flowmeter.

[0008] In a possible implementation manner, for the mounting base for a mass flowmeter provided by the present application, the height of the extension portion along the side of the first connecting member in the first direction is greater than or equal to 2 millimeters and less than or equal to 10 millimeters.

[0009] In a possible implementation manner, for the mounting base for a mass flowmeter provided by the present application, the first direction is perpendicular to the second direction, and the extension portion is perpendicular to the first connecting member.

[0010] In a possible implementation, for the mounting base of the mass flowmeter provided in the present application, the first connecting member, the second connecting member, and the extension portion are an integral structure. There are two second connecting members, and the two second connecting members are respectively arranged at both ends of the first connecting member, and the first connecting member is perpendicular to the second connecting member.

[0011] In a possible implementation, for the mounting base of the mass flowmeter provided in the present application, the extension portion has a connecting surface, and the connecting surface is used to match a part of the outer wall of the measuring tube.

[0012] In a possible implementation, for the mounting base of the mass flowmeter provided in the present application, the first connecting member has a mounting groove for installing a sensor. Along the second direction, the mounting groove is located on one side of the first connecting member, and the extension portion is close to the other side of the first connecting member.

[0013] In a second aspect, the mass flowmeter provided in the present application includes a mass flowmeter body, a sensor, and the mounting base of any of the mass flowmeters provided in the first aspect above provided on the mass flowmeter body. There is a gap between at least a part of the first connecting member and the mass flowmeter body, and the sensor is connected to the first connecting member.

[0014] In a possible implementation, for the mass flowmeter provided in the present application, the mass flowmeter body includes two measuring tubes. The paired mounting bases of the mass flowmeter are respectively fixed to the outer walls of the corresponding measuring tubes. The first connecting members of the paired mounting bases are arranged oppositely, and both ends of the sensor are respectively connected to the corresponding first connecting members.

[0015] In a possible implementation, for the mass flowmeter provided in the present application, the outer surfaces of the first connecting members of the paired mounting bases of the mass flowmeter are parallel to each other.

[0016] In a possible implementation, for the mass flowmeter provided in the present application, the extension line of the extension portion along the first direction towards one side of the first connecting member passes through the center of the measuring tube.

[0017] For the mounting base of the mass flowmeter and the mass flowmeter provided in the present application, by providing the first connecting member and at least two second connecting members on the mounting base of the mass flowmeter, it is defined that the first direction and the second direction are arranged at an angle, and each second connecting member is connected to the same side of the first connecting member along the first direction, so as to improve the strength and stability of the mounting base. The second connecting member has an extension portion extending along the second direction beyond the first connecting member. The first connecting member is used to connect with the sensor of the mass flowmeter, and the extension portion is used to weld with the measuring tube of the mass flowmeter, so that the sensor can detect the phase of the measuring tube. The extension portion extends beyond the first connecting member. When the extension portion is welded to the measuring tube, there is a spacing between the first connecting member and the measuring tube, which can reduce the accumulation of brazing solder, avoid the inclination of the mounting base, prevent the deviation of the installation angle of the sensor, and thus ensure the measurement accuracy of the mass flowmeter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 be obtained based on these drawings.

[0019] Figure 1 FIG.

[0020] Figure 2 is a schematic structural diagram of the mounting base of the mass flowmeter provided by the embodiment of the present application;

[0021] Figure 3 FIG. Figure 2 is an enlarged schematic structural diagram of part A in FIG.

[0022] Figure 4 FIG. Figure 2 is a schematic structural diagram of the mounting base of the mass flowmeter and the measuring tube in FIG.

[0023] Figure 5 FIG. Figure 4 is a schematic structural diagram from another angle.

[0024] DESCRIPTION OF REFERENCE NUMERALS:

[0025] 100 - mounting base;

[0026] 110 - first connecting member; 111 - mounting groove;

[0027] 120 - second connecting member; 121 - extending portion; 1211 - connecting surface;

[0028] 200 - measuring tube;

[0029] 300 - sensor; 310 - induction coil; 320 - magnet seat.

[0030] Through the above drawings, the clear embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and the written description 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 DESCRIPTION OF THE EMBODIMENTS

[0031] 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 adjust them according to needs to adapt to specific application scenarios.

[0032] Secondly, it should be noted that in the description of this application, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" 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 internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Then, it also needs to be noted that in the description of this 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 this 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 this application.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood 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 this application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0035] As shown in the background art, in the prior art, the bottom of the fixed seat has continuously arranged connecting parts. First, the sensor is installed on the fixed seat, and then the connecting part of the fixed seat and the vibrating tube are continuously welded by argon arc welding or laser welding, and then brazing is used for reinforcement. However, the brazing filler metal is likely to accumulate, causing the fixed seat to tilt, resulting in a deviation in the installation angle of the sensor, thereby affecting the measurement accuracy of the mass flowmeter.

[0036] Based on this, the mounting seat of the mass flowmeter and the mass flowmeter provided in this application. The mounting seat of the mass flowmeter defines that the first direction and the second direction are arranged at an angle by setting a first connecting piece and at least two second connecting pieces. The two second connecting pieces are connected to the same side of the first connecting piece along the first direction to improve the strength and stability of the mounting seat. The second connecting piece has an extension portion extending out of the first connecting piece along the second direction. The first connecting piece is used to connect with the sensor of the mass flowmeter, and the extension portion is used to weld with the measuring tube of the mass flowmeter, so that the sensor can detect the phase of the measuring tube. The extension portion extends out of the first connecting piece. When the extension portion is welded to the measuring tube, there is a distance between the first connecting piece and the measuring tube, which can reduce the accumulation of brazing filler metal, avoid the tilt of the mounting seat, and prevent the deviation of the installation angle of the sensor, thereby ensuring the measurement accuracy of the mass flowmeter.

[0037] To make the objectives, technical solutions, and advantages of this application clearer, 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 throughout represent the same or similar components or components with the same or similar functions. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the drawings are exemplary and are intended to explain this application and should not be construed as limiting 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.

[0038] Figure 1 Schematic structural diagram of the mounting seat of the mass flowmeter provided in the embodiment of this application; Figure 2 Schematic structural diagram of the mass flowmeter provided in the embodiment of this application; Figure 3 is Figure 2 Schematic enlarged structural diagram of part A in Figure 4 is Figure 2 Schematic structural diagram of the mounting seat and the measuring tube of the mass flowmeter in

[0039] Referring to Figures 1 to 3 As shown, the mounting seat 100 of the mass flowmeter provided in this application includes a first connector 110 and at least two second connectors 120. It is defined that the first direction and the second direction are arranged at an angle, and each second connector 120 is connected to the same side of the first connector 110 along the first direction.

[0040] The second connector 120 has an extension portion 121 extending out of the first connector 110 along the second direction. The first connector 110 is used to connect to the sensor 300 of the mass flowmeter, and the extension portion 121 is used to weld to the measuring tube 200 of the mass flowmeter.

[0041] Referring to Figure 4 As shown, the first direction is the X direction indicated by the arrow in Figure 4 , and the second direction is the Y direction indicated by the arrow in Figure 4 .

[0042] It should be noted that at least two second connectors 120 are arranged on the same side of the first connector 110 along the X direction, and each second connector 120 is welded to the measuring tube 200 of the mass flowmeter. On the one hand, it can balance the stress distribution on the mounting seat 100 to reduce noise; on the other hand, it can improve the strength and stability of the mounting seat 100 so that the mounting seat 100 can better withstand external stress, thereby improving the performance and reliability of the mass flowmeter.

[0043] The first connecting member 110 is used to connect with the sensor 300 of the mass flowmeter. In specific implementation, the sensor 300 and the second connecting member 120 can be on the same side of the first connecting member 110, or the sensor 300 and the second connecting member 120 can be on different sides of the first connecting member 110. The sensor 300 can also be installed on the side of the first connecting member 110 facing away from the measuring tube 200. The installation position of the sensor 300 can be determined according to the shapes and dimensions of the first connecting member 110 and the measuring tube 200, and the present application does not impose excessive restrictions on this.

[0044] Exemplarily, the first connecting member 110 can be plate-shaped, strip-shaped or shell-shaped, and the second connecting member 120 can be rectangular or trapezoidal. The first connecting member 110 and the second connecting member 120 can also be of other shapes, and the present application does not impose excessive restrictions on this.

[0045] Exemplarily, the first connecting member 110 and the second connecting member 120 can be made of stainless steel, or can be made of aluminum alloy, or can be of other materials. The present application does not impose excessive restrictions on the materials of the first connecting member 110 and the second connecting member 120.

[0046] At least two second connecting members 120. Exemplarily, the second connecting member 120 can be two, or can be more than two. The embodiments of the present application do not impose excessive restrictions on the number of the second connecting members 120. When the second connecting member 120 is two, the two second connecting members 120 can be respectively connected to both ends of the first connecting member 110, or can be connected to other positions of the first connecting member 110. When the second connecting member 120 is more than two, the distance between adjacent two second connecting members 120 can be the same or different. The specific setting manner of the second connecting member 120 can be determined according to the structure of the measuring tube 200, and the present application does not impose excessive restrictions on this.

[0047] It should also be noted that the second connecting member 120 has an extension portion 121 extending out of the first connecting member 110 along the Y direction. When the extension portion 121 of the second connecting member 120 is welded to the measuring tube 200 of the mass flowmeter, there is a spacing between the first connecting member 110 and the measuring tube 200, which can reduce the accumulation of brazing solder, avoid the inclination of the mounting seat 100, prevent the deviation of the installation angle of the sensor 300, and thus ensure the measurement accuracy of the mass flowmeter.

[0048] It can be understood that the sensor 300 is installed on the first connecting member 110 of the mounting seat 100, and the second connecting member 120 of the mounting seat 100 is welded to the measuring tube 200 of the mass flowmeter through the extension portion 121. Thus, the mounting seat 100 connects the sensor 300 to the measuring tube 200 so that the sensor 300 can detect the phase of the measuring tube 200.

[0049] In some embodiments, refer toFigure 1 and Figure 4 As shown in Figure 4 , the height of the extension part 121 along the first direction towards one side of the first connecting part 110 is greater than or equal to 2 mm and less than or equal to 10 mm.

[0050] Specifically, the height of the extension part 121 along the X direction towards one side of the first connecting part 110 (i.e., Figure 4 the length of S shown by the arrow in Figure 4 ), the length of S being between 2 mm and 10 mm can provide sufficient mechanical strength and stability, ensuring that the extension part 121 will not easily deform or break during connection and use, so that the mounting base 100 can provide stable support for the sensor 300.

[0051] It should be noted that when the length of S is greater than or equal to 2 mm and less than or equal to 10 mm, the height of the first connecting part 110 (i.e., Figure 4 the length of H shown by the arrow in Figure 4 ) can be 7 mm to 8 mm, and can be determined according to the diameter of the measuring tube 200 and the size of the sensor 300 during specific implementation, and this application does not limit it too much.

[0052] Figure 5 For Figure 4 a structural schematic diagram from another angle.

[0053] In some embodiments, referring to Figure 4 and Figure 5 as shown, the first direction is perpendicular to the second direction, and the extension part 121 is perpendicular to the first connecting part 110.

[0054] It should be noted that since the second connecting part 120 is connected to the first connecting part 110 along the first direction, the extending direction of the extension part 121 is the second direction, the first direction is perpendicular to the second direction, and the first connecting part 110 is perpendicular to the extension part 121, so that the first connecting part 110 and the second connecting part 120 as a whole are perpendicular to the extension part 121. In this way, the extension part 121 can provide more stable support for the first connecting part 110 and the second connecting part 120, so that the mounting base 100 can better withstand and disperse stresses and loads from different directions, and reduce the possibility of deformation and damage of the mounting base 100.

[0055] In some embodiments, referring to Figure 4 and Figure 5 as shown, the first connecting part 110, the second connecting part 120 and the extension part 121 are of an integral structure, the second connecting part 120 is two, and the two second connecting parts 120 are respectively arranged at both ends of the first connecting part 110, and the first connecting part 110 is perpendicular to the second connecting part 120.

[0056] It can be understood that the first connecting member 110, the second connecting member 120 and the extension portion 121 are of an integral structure, which can prevent loosening at the connection between the first connecting member 110 and the second connecting member 120 (or at the connection between the second connecting member 120 and the extension portion 121), thereby enhancing the strength and rigidity of the mounting base 100. The integral structure can also reduce deformation caused by thermal expansion and contraction or mechanical vibration.

[0057] It should be noted that the two second connecting members 120 are respectively arranged at both ends of the first connecting member 110, which can effectively disperse and transfer stress and reduce stress concentration. The first connecting member 110 is perpendicular to the second connecting member 120, further improving the stability of the mounting base 100.

[0058] In some embodiments, referring to Figure 1 and Figure 4 as shown, the extension portion 121 has a connection surface 1211, and the connection surface 1211 is used to match a part of the outer wall of the measuring tube 200.

[0059] It can be understood that by providing the connection surface 1211 on the extension portion 121, it can be used as a reference for aligning and positioning the extension portion 121 and the measuring tube 200, making the installation process simpler and more accurate, reducing installation errors, and improving installation efficiency.

[0060] Furthermore, the connection surface 1211 can increase the contact area between the extension portion 121 and the measuring tube 200, thereby dispersing stress, reducing the situation of single-point force, enhancing the overall connection strength, and reducing the possibility of relative movement and loosening. Also, the connection surface 1211 can increase the rigidity of the extension portion 121 and reduce the influence of vibration on the extension portion 121.

[0061] In some embodiments, referring to Figure 1 、 Figure 3 and Figure 4 as shown, the first connecting member 110 has a mounting groove 111 for mounting the sensor 300. Along the second direction, the mounting groove 111 is located on one side of the first connecting member 110, and the extension portion 121 is close to the other side of the first connecting member 110.

[0062] It should be noted that the mounting groove 111 is located on one side of the first connecting member 110, and the extension portion 121 is close to the other side of the first connecting member 110. Specifically, the notch of the mounting groove 111 can face the positive direction of Y, and the extending direction of the extension portion 121 can be the reverse direction of Y, that is, the notch of the mounting groove 111 faces away from the measuring tube 200 connected to the extension portion 121. In this way, the two ends of the sensor 300 can be inserted into the first connecting member 110 along the mounting groove 111, making the installation and disassembly of the sensor 300 more convenient and improving work efficiency.

[0063] The present application also provides a mass flowmeter. Refer to Figures 3 to 5 As shown, it includes a mass flowmeter body, a sensor 300, and a mounting seat 100 of the mass flowmeter disposed on the mass flowmeter body. There is a gap between at least part of the first connecting member 110 and the mass flowmeter body, and the sensor 300 is connected to the first connecting member 110.

[0064] It can be understood that when the mounting seat 100 is welded to the mass flowmeter body, there is a gap between at least part of the first connecting member 110 and the mass flowmeter body, which can reduce the accumulation of brazing solder, avoid the inclination of the mounting seat 100, prevent the deviation of the installation angle of the sensor 300, and thus ensure the measurement accuracy of the mass flowmeter.

[0065] Among them, the specific structure and working mode of the mounting seat 100 of the mass flowmeter have been described in detail in the above embodiments, and will not be elaborated here one by one.

[0066] In some embodiments, refer to Figure 3 As shown, the mass flowmeter body includes two measuring tubes 200. The paired mounting seats 100 of the mass flowmeter are respectively fixed to the outer walls of the corresponding measuring tubes 200. The first connecting members 110 of the paired mounting seats 100 are oppositely arranged, and both ends of the sensor 300 are respectively connected to the corresponding first connecting members 110.

[0067] Specifically, the paired mounting seats 100 are respectively fixed to the outer walls of the two measuring tubes 200, and the first connecting members 110 are oppositely arranged, so that the sensor 300 is disposed between the paired mounting seats 100, and both ends of the sensor 300 are respectively connected to the corresponding first connecting members 110. Thus, both ends of the sensor 300 are supported, improving the stability of the sensor 300, and thus ensuring the measurement accuracy of the mass flowmeter.

[0068] In some embodiments, refer to Figure 3 As shown, the sensor 300 includes an induction coil 310 and a magnetic steel seat 320. The induction coil 310 is mainly used to detect the vibration state of the measuring tube 200. When the measuring tube 200 vibrates, the induction coil 310 will sense the electromagnetic change generated by the vibration and convert it into an electrical signal, and these electrical signals can reflect the vibration frequency and phase change of the measuring tube 200. The magnetic steel seat 320 is usually composed of a permanent magnet or an electromagnet and can generate a stable magnetic field for the induction coil 310 to use.

[0069] In some embodiments, refer to Figure 4 and Figure 5 As shown, the outer surfaces of the first connecting members 110 of the paired mounting seats 100 of the mass flowmeter are parallel to each other.

[0070] It can be understood that the outer surfaces of the first connecting member 110 are parallel to each other to prevent deviation in the installation angle of the sensor 300 mounted on the first connecting member 110, ensuring that both ends of the sensor 300 can be aligned parallel during installation, thereby guaranteeing the measurement accuracy of the mass flowmeter.

[0071] In some embodiments, with reference to Figure 4 As shown, the extension line of the side of the extension portion 121 facing the first connecting member 110 passes through the center of the measuring tube 200.

[0072] It should be noted that when the extension line of one side of the extension portion 121 passes through the center of the measuring tube 200, the sensor 300 provided on the mounting base 100 can more accurately capture the flow characteristics of the fluid, thereby improving the measurement sensitivity and accuracy.

[0073] It should also be noted that the extension line of one side of the extension portion 121 passing through the center of the measuring tube 200 can ensure that the mechanical stress is more evenly distributed between the measuring tube 200 and the mounting base 100, reducing stress concentration points, thereby improving the reliability of the system.

[0074] Those skilled in the art can understand that for the mounting base 100 of the mass flowmeter and the mass flowmeter provided in this application, the mounting base 100 of the mass flowmeter defines the first direction and the second direction to be set at an angle by arranging the first connecting member 110 and at least two second connecting members 120. The two second connecting members 120 are connected to the same side of the first connecting member 110 along the first direction to improve the strength and stability of the mounting base 100. The second connecting member 120 has an extension portion 121 extending out of the first connecting member 110 along the second direction. The first connecting member 110 is used to connect to the sensor 300 of the mass flowmeter, and the extension portion 121 is used to be welded to the measuring tube 200 of the mass flowmeter, so that the sensor 300 can detect the phase of the measuring tube 200. The extension portion 121 extends out of the first connecting member 110. When the extension portion 121 is welded to the measuring tube 200, there is a spacing between the first connecting member 110 and the measuring tube 200, which can reduce the accumulation of brazing filler metal, avoid tilting of the mounting base 100, and prevent deviation in the installation angle of the sensor 300, thereby guaranteeing the measurement accuracy of the mass flowmeter.

[0075] In the description of this specification, the descriptions referring to terms such as "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 the present application. In this specification, the schematic expressions 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.

[0076] It can be understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0077] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present 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 the present application.

Claims

1. Mounting seat for a mass flowmeter, characterized in that, It includes a first connecting member and at least two second connecting members, and the first direction and the second direction are defined to be set at an angle. Each of the second connecting members is connected to the same side of the first connecting member along the first direction; The second connecting member has an extension portion extending out of the first connecting member along the second direction. The first connecting member is used to connect with the sensor of the mass flowmeter, and the extension portion is used to be welded to the measuring tube of the mass flowmeter.

2. The mounting seat of the mass flowmeter according to claim 1, characterized in that, The height of the extension portion along the first direction towards the side of the first connecting member is greater than or equal to 2 millimeters and less than or equal to 10 millimeters.

3. The mounting base of the mass flowmeter according to claim 1, characterized in that, The first direction is perpendicular to the second direction, and the extension portion is perpendicular to the first connecting member.

4. The mounting base of the mass flowmeter according to claim 2, characterized in that, The first connecting member, the second connecting member and the extension portion are of an integral structure. There are two second connecting members, and the two second connecting members are respectively arranged at both ends of the first connecting member. The first connecting member is perpendicular to the second connecting member.

5. The mounting base of the mass flowmeter according to claim 1, characterized in that The extension portion has a connecting surface, and the connecting surface is used to match with a part of the outer wall of the measuring tube.

6. The mounting base of the mass flowmeter according to claim 1, characterized in that, The first connecting member has a mounting groove for mounting the sensor. Along the second direction, the mounting groove is located on one side of the first connecting member, and the extension portion is close to the other side of the first connecting member.

7. A mass flowmeter, characterized in that, It includes a mass flowmeter body, a sensor and a mounting seat of the mass flowmeter as described in any one of claims 1 to 6 provided on the mass flowmeter body. There is a gap between at least part of the first connecting member and the mass flowmeter body, and the sensor is connected to the first connecting member.

8. The mass flowmeter according to claim 7, characterized in that, The mass flowmeter body includes two measuring tubes. The paired mounting seats of the mass flowmeter are respectively fixed to the outer walls of the corresponding measuring tubes. The first connecting members of the paired mounting seats are arranged oppositely, and both ends of the sensor are respectively connected to the corresponding first connecting members.

9. The mass flowmeter according to claim 8, characterized in that, The outer surfaces of the first connecting members of the paired mounting seats of the mass flowmeter are parallel to each other.

10. The mass flowmeter according to claim 8, wherein, The extension line of the side of the extension portion along the first direction towards the first connecting member passes through the center of the measuring tube.

Images