Coaxial fixed mounting structure for coil and magnet seat of mass flow sensor

Abstract

The utility model relates to the technical field of mass flow meters, and discloses a coaxial fixed mounting structure for a coil and a magnet seat of a mass flow sensor, which comprises a measuring tube, a cylindrical bracket, a magnet seat, a detection coil and a fixing screw, the number of the measuring tubes is two; the number of the cylindrical supports is two, and the two cylindrical supports are coaxially and fixedly installed on the measuring tubes and are correspondingly perpendicular to the two measuring tubes. The magnet seat and the detection coil are integrally installed between the opposite inner side ends of the two cylindrical supports. The number of the fixing screws is two, and the two fixing screws penetrate through the two cylindrical supports from the two outer side ends of the two cylindrical supports so as to be detachably connected and installed with the magnet base and the detection coil. The magnet seat and the detection coil are both of an axisymmetric structure. By ensuring the coaxiality of the cylindrical bracket, the problem that the product performance is unstable or parts are scrapped due to the fact that coils and magnet seat brackets between measuring tubes on the conventional mass flow sensor are easy to be non-coaxial when being manufactured by adopting a steel plate and metal plate brazing mode is at least solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mass flowmeters, in particular to a coaxial fixed installation structure of a mass flow sensor coil and a magnet seat. Background Art

[0002] Currently, the bracket for installing the coil and magnet seat between the measuring tubes on the mass flow sensor is made of steel sheet metal and fixed to the measuring tube by brazing. The coaxiality of the coil and magnet seat is ensured by assembly tooling. However, there is a hidden danger of deformation of the bracket during the brazing process. After the brazing is completed, the position of the bracket cannot be adjusted. If there is misalignment when installing the coil and magnet seat, the product performance will be unstable, and in severe cases, the parts will be scrapped. Utility Model Content

[0003] The main purpose of the utility model is to provide a coaxial fixed installation structure for the coil and the magnet base of a mass flow sensor, so as to at least solve the problem that the coil and the magnet base bracket between the measuring tube of the current mass flow sensor are made by brazing steel sheets and are prone to misalignment, resulting in unstable product performance or scrapped parts.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a mass flow sensor coil and a coaxial fixed installation structure of a magnet base, comprising: a measuring tube, wherein there are two measuring tubes; a cylindrical bracket, wherein there are two cylindrical brackets, and the two cylindrical brackets are coaxially fixedly installed on the measuring tube and perpendicular to the two measuring tubes; a magnet base and a detection coil, wherein the magnet base and the detection coil are integrally installed between the opposite inner ends of the two cylindrical brackets; a fixing screw, wherein there are two fixing screws, and the two fixing screws pass through the two cylindrical brackets from the two outer ends of the two cylindrical brackets to be detachably connected and installed with the magnet base and the detection coil; wherein the magnet base and the detection coil are both axially symmetrical structures; the magnet base is used to drive the measuring tube to vibrate according to its natural frequency, and the detection coil is used to monitor the vibration state, vibration amplitude and vibration period of the measuring tube.

[0005] Furthermore, the magnet seat includes: a magnet bar, which is connected to the detection coil; a base, a first mounting hole is opened on the end face of the base away from the magnet bar, and a fixing screw passes through the corresponding cylindrical bracket and is fixedly connected to the first mounting hole; wherein, the magnet bar and the base are an integrated structure.

[0006] Furthermore, the detection coil includes: a first mounting ring, a plug-in hole matching the magnet bar is provided in the middle of the first mounting ring, and the magnet bar can be removably embedded in the plug-in hole; a second mounting ring, a second mounting hole is provided on the end face of the second mounting ring away from the first mounting ring, and another fixing screw passes through the corresponding cylindrical bracket and is fixedly connected to the second mounting hole; wherein, the center lines of the first mounting hole and the second mounting hole are collinear, and the second mounting ring and the first mounting ring are an integral structure.

[0007] Furthermore, a thread is provided in the first mounting hole of the base, and the thread is used for installing a fixing screw.

[0008] Furthermore, a thread is provided in the second mounting hole of the second mounting ring, and the thread is used for installing a fixing screw.

[0009] A mass flow sensor coil and magnet base coaxially fixed installation structure using the technical solution of the present invention includes a measuring tube, a cylindrical bracket, a magnet base, a detection coil and fixing screws; there are two measuring tubes; there are two cylindrical brackets, the two cylindrical brackets are coaxially fixedly installed on the measuring tubes and perpendicular to the two measuring tubes; the magnet base and the detection coil are integrally installed between the opposite inner ends of the two cylindrical brackets; there are two fixing screws, the two fixing screws pass through the two cylindrical brackets from the two outer ends of the two cylindrical brackets to be detachably connected and installed with the magnet base and the detection coil; wherein the magnet base and the detection coil are both axially symmetrical structures; the magnet base is used to drive the measuring tube to vibrate according to its natural frequency, and the detection coil is used to monitor the vibration state, vibration amplitude and vibration period of the measuring tube. By ensuring the coaxiality of the cylindrical bracket, at least the problem that the coil and magnet base bracket between the measuring tubes on the current mass flow sensor are made by brazing steel plates and are prone to misalignment, resulting in unstable product performance or scrapped parts, can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0011] Figure 1 This is a schematic structural diagram of a coaxial fixed installation structure of a mass flow sensor coil and a magnet base, which can be selected according to an embodiment of the present utility model;

[0012] Figure 2 This is a schematic diagram of a cylindrical bracket of a coaxial fixed installation structure of a mass flow sensor coil and a magnet base, which can be selected according to an embodiment of the present utility model;

[0013] Figure 3This is a cross-sectional schematic diagram of a coaxial fixed installation structure of a mass flow sensor coil and a magnet base, which can be selected according to an embodiment of the present utility model;

[0014] Figure 4 This is a schematic diagram of a magnet base of a mass flow sensor coil and a coaxial fixed installation structure according to an embodiment of the present utility model;

[0015] Figure 5 This is a schematic diagram of a detection coil of a mass flow sensor coil and a coaxial fixed installation structure of a magnet base, which can be selected according to an embodiment of the present utility model.

[0016] The above drawings include the following reference numerals:

[0017] 10. Measuring tube; 20. Cylindrical bracket; 30. Magnet holder; 31. Magnet bar; 32. Base; 40. Detection coil; 41. First mounting ring; 42. Second mounting ring; 50. Fixing screw. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] According to an embodiment of the present invention, a mass flow sensor coil and a magnet base are coaxially fixedly installed. Figure 1 and Figure 2 As shown, it includes a measuring tube 10, a cylindrical bracket 20, a magnet base 30, a detection coil 40 and a fixing screw 50; there are two measuring tubes 10; there are two cylindrical brackets 20, which are coaxially fixed on the measuring tube 10 and perpendicular to the two measuring tubes 10; the magnet base 30 and the detection coil 40 are integrally installed between the opposite inner ends of the two cylindrical brackets 20; there are two fixing screws 50, which pass through the two cylindrical brackets 20 from the two outer ends of the two cylindrical brackets 20 to be detachably connected and installed with the magnet base 30 and the detection coil 40; wherein the magnet base 30 and the detection coil 40 are both axially symmetrical structures; the magnet base 30 is used to drive the measuring tube 10 to vibrate according to its natural frequency, and the detection coil 40 is used to monitor the vibration state, vibration amplitude and vibration period of the measuring tube 10. When installing the cylindrical bracket 20, a steel rod is used to ensure that the cylindrical bracket 20 is always on the same axis and the magnet base 30 and the detection coil 40 are guaranteed to be on the same axis with the cylindrical bracket 20. By ensuring the coaxiality of the cylindrical bracket 20, it can at least solve the problem that the coil between the measuring tube 10 and the magnet base 30 bracket on the current mass flow sensor is made by brazing steel plates and is prone to misalignment, resulting in unstable product performance or scrapped parts.

[0020] When implementing it specifically, Figure 1 As shown, the cylindrical bracket 20 is brazed to the measuring tube 10. During brazing, the two cylindrical brackets 20 are strung together with a steel rod and held at the same axial height before welding. This ensures that the two cylindrical brackets 20 remain coaxial during the welding process, preventing any deviation in coaxiality between the two cylindrical brackets 20.

[0021] Furthermore, if Figure 3 and Figure 4 As shown, the magnet base 30 includes a magnet bar 31 and a base 32; the magnet bar 31 is connected to the detection coil 40; the magnet bar 31 is cylindrical, and a first mounting hole is formed on the end surface of the base 32 away from the magnet bar 31. A fixing screw 50 passes through the corresponding cylindrical bracket 20 and is fixedly connected to the first mounting hole. One end of the cylindrical bracket 20 is opposite the end of the base 32 away from the magnet bar 31. The length of the fixing screw 50 is longer than the length of the cylindrical bracket 20, and the portion of the fixing screw 50 extending beyond the cylindrical bracket 20 is connected to the base 32; the magnet bar 31 and the base 32 are fixedly connected as a single unit. The base 32 has two layers of circular rings, one large and one small. The small circular ring is connected to the magnet bar 31 and the magnet bar 31 is embedded in the small circular ring. The large circular ring is located outside the first mounting hole and is clamped and fixed to the cylindrical bracket 20.

[0022] Furthermore, if Figure 3 and Figure 5 As shown, the detection coil 40 includes a first mounting ring 41 and a second mounting ring 42; a plug-in hole matching the magnet bar 31 is provided in the middle of the first mounting ring 41, and a circular ring outside the plug-in hole is clamped and fixed with a small circular ring outside the base of the magnet seat 30; the magnet bar 31 is detachably embedded in the plug-in hole; a second mounting hole is provided on the end face of the second mounting ring 42 on the side away from the first mounting ring 41, and the first mounting ring 41 and the second mounting ring 42 are connected by the plug-in hole, and the second mounting ring is a symmetrical structure, and another fixing screw 50 passes through the corresponding cylindrical bracket 20 and is fixedly connected to the second mounting hole; wherein, the center lines of the first mounting hole and the second mounting hole are collinear, and the second mounting ring 42 and the first mounting ring 41 are an integral structure.

[0023] Furthermore, the two cylindrical brackets 20 also have threads for installing fixing screws 50. The magnet base 30 and the detection coil 40 are integrally installed on the inner ends of the two cylindrical brackets 20. The magnet base 30 and the cylindrical bracket 20, the detection coil 40 and the cylindrical bracket 20, and the magnet base 30 and the detection coil 40 are all detachably connected, which will not cause damage to the magnet base 30 and the detection coil 40, thereby improving the quality measurement accuracy.

[0024] Furthermore, a thread is provided in the first mounting hole of the base 32 , and the thread is used to install a fixing screw 50 .

[0025] Furthermore, a thread is provided in the second mounting hole of the second mounting ring 42 , and the thread is used to install the fixing screw 50 .

[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A mass flow sensor coil and magnet base coaxial fixed installation structure, characterized in that: include: Measuring tubes (10), there are two measuring tubes (10); A cylindrical bracket (20), wherein there are two cylindrical brackets (20), and the two cylindrical brackets (20) are coaxially fixedly mounted on the measuring tube (10) and are perpendicular to the two measuring tubes (10); A magnet base (30) and a detection coil (40), wherein the magnet base (30) and the detection coil (40) are integrally mounted between opposite inner ends of the two cylindrical supports (20); Two fixing screws (50) are provided, and the two fixing screws (50) pass through the two cylindrical supports (20) from the two outer ends of the two cylindrical supports (20) to be detachably connected and installed with the magnet base (30) and the detection coil (40); The magnet base (30) and the detection coil (40) are both axisymmetric structures; the magnet base (30) is used to drive the measuring tube (10) to vibrate at its natural frequency, and the detection coil (40) is used to monitor the vibration state, vibration amplitude and vibration period of the measuring tube (10).

2. The coaxial fixed installation structure of the mass flow sensor coil and the magnet seat according to claim 1 is characterized in that: The magnet base (30) comprises: a magnet bar (31), the magnet bar (31) being connected to the detection coil (40); A base (32), wherein a first mounting hole is formed on an end surface of the base (32) away from the magnet bar (31), and a fixing screw (50) passes through the corresponding cylindrical bracket (20) and is fixedly connected to the first mounting hole; Wherein, the magnet bar (31) and the base (32) are an integral structure.

3. The coaxial fixed installation structure of the mass flow sensor coil and the magnet seat according to claim 2 is characterized in that: The detection coil (40) comprises: A first mounting ring (41), wherein a plug hole matching the magnet bar (31) is provided in the middle of the first mounting ring (41), and the magnet bar (31) is detachably embedded in the plug hole; A second mounting ring (42), wherein a second mounting hole is provided on an end surface of the second mounting ring (42) away from the first mounting ring (41), and another fixing screw (50) passes through the corresponding cylindrical bracket (20) and is fixedly connected to the second mounting hole; The center lines of the first mounting hole and the second mounting hole are collinear, and the second mounting ring (42) and the first mounting ring (41) are an integral structure.

4. The coaxial fixed installation structure of the mass flow sensor coil and the magnet seat according to claim 2, characterized in that: The first mounting hole of the base (32) is provided with a thread, and the thread is used to install the fixing screw.

5. The coaxial fixed installation structure of the mass flow sensor coil and the magnet seat according to claim 3, characterized in that: The second mounting hole of the second mounting ring (42) is provided with a thread, and the thread is used for installing a fixing screw.

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