Coriolis mass flow meter

Abstract

The utility model discloses a Coriolis mass flow meter, and belongs to the technical field of measurement. A driver and a detector of the device are connected to a measuring tube through a mounting assembly, the mounting assembly comprises a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are movably connected, extrusion assemblies are movably connected to the outer sides of the first connecting piece and the second connecting piece, and limiting grooves are formed in the two sides of the first connecting piece and the two sides of the second connecting piece; the first connecting piece and the second connecting piece are movably connected, the first connecting piece and the second connecting piece can be conveniently disassembled and reused, pressure is applied to one end of the outer side of the sealing piece by arranging the extrusion assembly, the sealing piece is arranged on the outer side of the sealing piece, and therefore the sealing piece can be conveniently disassembled and reused. The sealing piece is inserted into the limiting groove, tight connection between the installation assembly and the measuring pipe is achieved, friction force between the installation assembly and the measuring pipe is increased, and connection is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, and more specifically to a Coriolis mass flowmeter. Background Art

[0002] The Coriolis mass flowmeter (hereinafter referred to as the Coriolis flowmeter) is a new type of intelligent instrument that measures the mass, density, temperature and other parameters of the fluid flowing through the pipeline based on the Coriolis effect. Specifically, the Coriolis flowmeter divides the fluid to perform simple harmonic vibration (or circular motion). When the fluid medium flows through the divider at a certain speed, the medium vibrates synchronously with the divider on the one hand (simple harmonic vibration or circular motion), and continues to pass through the pipeline at the same speed on the other hand. At this time, the medium generates a reaction force perpendicular to the flow direction of the medium on the pipeline, namely the "Coriolis force"; under the action of this force, the synchronous vibration at the symmetrical position of the measuring tube is transformed into asynchronous vibration, and this asynchronous nature is reflected in the vibration signal waveform as a phase difference. The value of the phase difference is proportional to the mass flow rate of the medium. The mass flow rate of the medium can be obtained by calculating the phase difference of the signal through the detection circuit.

[0003] The existing patent CN210486976U discloses a Coriolis mass flowmeter for hydrogenation. By changing the distance between the driver, the detector and the fixed block on the measuring tube, the flowmeter can be prevented from being in a high-frequency torsional vibration mode even when the stiffness of the measuring tube is insufficient, thereby ensuring the stable operation of the flowmeter. However, the first fixing frame and the second fixing frame in the device are respectively welded to the measuring tube, so that the installation positions of the driver and the detector cannot be adjusted, and the first fixing frame and the second fixing frame cannot be reused, resulting in waste. In view of this, we propose a Coriolis mass flowmeter. Utility Model Content

[0004] The purpose of the utility model is to provide a Coriolis mass flowmeter to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A Coriolis mass flowmeter comprises a measuring tube, wherein a driver is connected to the central axis of the measuring tube, and a detector is symmetrically arranged inside the measuring tube. The driver and the detector are both connected to the measuring tube through a mounting assembly, and the mounting assembly comprises a first connecting member and a second connecting member, wherein the first connecting member and the second connecting member are movably connected, and an extrusion assembly is movably connected to the outer sides of the first connecting member and the second connecting member, and limiting grooves are provided on both sides of the first connecting member and the second connecting member, and a sealing sheet is arranged on the outer side of the limiting groove, and the outer side surface of the sealing sheet is an inclined surface, and the extrusion assembly is in contact with the sealing sheet.

[0007] Preferably, the extrusion assembly comprises a pressing sheet, the pressing sheet is provided with a protrusion, and the protrusion is in contact with the outer edge of the sealing sheet.

[0008] Preferably, fixing grooves are provided on both sides of the first connecting member and the second connecting member, the fixing grooves are located outside the limiting grooves, the pressing sheet extends into the fixing grooves, and the pressing sheet is elastically connected to the fixing grooves.

[0009] Preferably, an elastic pull rod is provided at one end of the pressing sheet located in the fixing groove, and the elastic pull rod is connected to the fixing groove.

[0010] Preferably, the elastic pull rod comprises a telescopic rod and a spring, and the spring is sleeved on the outer wall of the telescopic rod.

[0011] Preferably, the detector is signal connected to the driver.

[0012] Preferably, it also includes a cross flow tube, on which two connecting seats are symmetrically arranged, the connecting seats are connected to the cross flow tube, and the end of the measuring tube is connected to the connecting seats.

[0013] Preferably, connection holes are provided on both sides of the first connection member and the second connection member, and bolts are provided through the connection holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) The first connecting member and the second connecting member of the utility model are movably connected, which facilitates the disassembly and reuse of the first connecting member and the second connecting member. By setting an extrusion component to apply a pressure to the outer end of the sealing sheet, the sealing sheet is inserted into the limit groove, thereby achieving a tight connection between the installation component and the measuring tube, increasing the friction between the installation component and the measuring tube, and making the connection more stable.

[0016] (2) The outer side surface of the sealing piece of the utility model is an inclined surface, which increases the sealing performance and connection stability, avoids the wear of the sealing piece and the deterioration of the connection effect, and increases the service life of the sealing piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the Coriolis mass flowmeter of the utility model;

[0018] Figure 2 This is a schematic diagram of the installation components of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first connecting member of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the pressing sheet and the sealing sheet of the utility model.

[0021] Explanation of the numbers in the figure: 1. Measuring tube; 2. Driver; 3. Mounting assembly; 301. First connecting piece; 302. Second connecting piece; 303. Limiting groove; 304. Sealing piece; 305. Fixing groove; 4. Pressing piece; 5. Elastic pull rod; 6. Protrusion; 7. Detector; 8. Cross flow tube; 9. Connecting seat. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0023] Embodiment 1:

[0024] See also Figure 1-4 A Coriolis mass flowmeter includes a measuring tube 1, a driver 2 is connected to the central axis of the measuring tube 1, a detector 7 is symmetrically arranged inside the measuring tube 1, the driver 2 and the detector 7 are connected to the measuring tube 1 through a mounting assembly 3, the mounting assembly 3 includes a first connecting member 301 and a second connecting member 302, the first connecting member 301 and the second connecting member 302 are movably connected, the first connecting member 301 and the second connecting member 302 are movably connected to the outside of the first connecting member 301 and the second connecting member 302, and the first connecting member 301 and the second connecting member 302 are both opened on both sides. A limiting groove 303 is provided with a sealing sheet 304 on the outside of the limiting groove 303. The outer side of the sealing sheet 304 is an inclined surface. The extrusion component contacts the sealing sheet 304. The extrusion component applies a pressure to one end of the outer side of the sealing sheet 304 to insert the sealing sheet 304 into the limiting groove 303, thereby realizing a tight connection between the installation component 3 and the measuring tube 1, increasing the friction between the installation component 3 and the measuring tube 1, and making the connection more stable. The outer side of the sealing sheet 304 is an inclined surface, which increases the sealing and connection stability, and avoids the wear of the sealing sheet 304 and deteriorating the connection effect.

[0025] In the present application, the extrusion assembly includes a pressing sheet 4 on which a protrusion 6 is provided. The protrusion 6 contacts the outer edge of the sealing sheet 304 . The sealing sheet 304 is limited by providing the protrusion 6 , so that the pressing sheet 4 can apply force to the sealing sheet 304 .

[0026] In the present application, fixing grooves 305 are provided on both sides of the first connecting member 301 and the second connecting member 302, and the fixing grooves 305 are located on the outside of the limiting grooves 303. The pressing sheet 4 extends into the fixing grooves 305, and the pressing sheet 4 is elastically connected to the fixing grooves 305. Through the elastic connection, a pulling force is provided to the pressing sheet 4 toward one side of the fixing grooves 305, so that the pressing sheet 4 provides a thrust to the sealing sheet 304, so that the sealing sheet 304 is tightly connected to the inner wall of the mounting assembly 3 and the outer wall of the measuring tube 1.

[0027] In the present application, an elastic pull rod 5 is provided at one end of the pressing sheet 4 located in the fixing groove 305 , and the elastic pull rod 5 is connected to the fixing groove 305 . The pressing sheet 4 is pulled to move toward the inside of the fixing groove 305 by providing the elastic pull rod 5 .

[0028] In the present application, the elastic pull rod 5 includes a telescopic rod and a spring. The spring is sleeved on the outer wall of the telescopic rod, and the tension of the spring is used to apply force to the pressing sheet 4.

[0029] In the present application, the detector 7 is signal-connected to the driver 2 .

[0030] The present application also includes a cross flow tube 8 , on which two connection seats 9 are symmetrically arranged. The connection seats 9 are connected to the cross flow tube 8 , and the end of the measuring tube 1 is connected to the connection seats 9 .

[0031] When the utility model is used, the first connecting member 301 and the second connecting member 302 are respectively placed on both sides of the measuring tube 1, and then the first connecting member 301 and the second connecting member 302 are movably connected, so that the first connecting member 301 and the second connecting member 302 can be easily disassembled and reused. When the first connecting member 301 and the second connecting member 302 are connected, the pressing sheet 4 and the sealing sheet 304 are moved to the outside of the fixing groove 305 and the limiting groove 303, and the sealing sheet 304 is removed. When the first connecting member 301 and the second connecting member 302 are connected to the measuring tube 1, the pressing sheet 4 is pulled outward to put the sealing sheet 304 inside the pressing sheet 4, and the protrusion 6 is pressed against the end of the sealing sheet 304; the pressing sheet 4 is pulled to move inside the fixing groove 305 by the elastic pull rod 5, so that the sealing sheet 304 is inserted into the limiting groove 303, so as to realize the close connection between the mounting assembly 3 and the measuring tube 1, increase the friction between the mounting assembly 3 and the measuring tube 1, and make the connection more stable.

[0032] Embodiment 2:

[0033] The difference between the first connection member 301 and the second connection member 302 is that connection holes are provided on both sides of the first connection member 301 and the second connection member 302, and bolts are provided through the connection holes. The bolts pass through the connection holes on the first connection member 301 and the second connection member 302 to connect them, thereby facilitating the disassembly and installation of the installation assembly 3. The first connection member 301 and the second connection member 302 are connected and fixed by bolts of different lengths, and different bolts can be selected according to different thicknesses of the measuring tube 1, so that the application range of the installation assembly 3 is wider.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A Coriolis mass flowmeter, comprising a measuring tube (1), wherein a driver (2) is connected to the central axis of the measuring tube (1), and a detector (7) is symmetrically arranged inside the measuring tube (1), characterized in that: The driver (2) and the detector (7) are both connected to the measuring tube (1) via a mounting assembly (3); the mounting assembly (3) comprises a first connecting piece (301) and a second connecting piece (302); the first connecting piece (301) and the second connecting piece (302) are movably connected; the first connecting piece (301) and the second connecting piece (302) are both movably connected to an extrusion assembly on their outer sides; limiting grooves (303) are provided on both sides of the first connecting piece (301) and the second connecting piece (302); a sealing sheet (304) is provided on the outer side of the limiting groove (303); the outer side surface of the sealing sheet (304) is an inclined surface; and the extrusion assembly is in contact with the sealing sheet (304).

2. A Coriolis mass flowmeter according to claim 1, characterized in that: The extrusion assembly comprises a pressing sheet (4), the pressing sheet (4) being provided with a protrusion (6), the protrusion (6) being in contact with the outer edge of the sealing sheet (304).

3. A Coriolis mass flowmeter according to claim 2, characterized in that: Both sides of the first connecting member (301) and the second connecting member (302) are provided with fixing grooves (305), the fixing grooves (305) are located outside the limiting grooves (303), the pressing sheet (4) extends into the fixing grooves (305), and the pressing sheet (4) is elastically connected to the fixing grooves (305).

4. A Coriolis mass flowmeter according to claim 3, characterized in that: An elastic pull rod (5) is provided at one end of the pressing sheet (4) located in the fixing groove (305), and the elastic pull rod (5) is connected to the fixing groove (305).

5. A Coriolis mass flowmeter according to claim 4, characterized in that: The elastic pull rod (5) comprises a telescopic rod and a spring, and the spring is sleeved on the outer wall of the telescopic rod.

6. A Coriolis mass flowmeter according to claim 1, characterized in that: The detector (7) is signal-connected to the driver (2).

7. A Coriolis mass flowmeter according to claim 1, characterized in that: It also comprises a cross-flow tube (8), on which two connecting seats (9) are symmetrically arranged, the connecting seats (9) are communicated with the cross-flow tube (8), and the end of the measuring tube (1) is connected to the connecting seats (9).

8. A Coriolis mass flowmeter according to claim 1, characterized in that: Both sides of the first connecting member (301) and the second connecting member (302) are provided with connecting holes, and bolts are provided through the connecting holes.

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