Portal mass flow meter

Abstract

The utility model provides a gate type mass flowmeter, which relates to the technical field of flowmeters and comprises a main pipe, a communicating pipe is fixed at the top end of the main pipe, a flowmeter main body is mounted at the top end of the communicating pipe, two ends of the main pipe are in threaded connection with connecting pipes, and connecting blocks are fixed on two sides of the bottom end of the main pipe. The bottom ends of the two connecting blocks are jointly provided with two measuring pipes, two symmetrical displacement sensor supports are fixed to the outer walls of the measuring pipes, and vibration exciter supports are fixed to the outer walls of the measuring pipes. A displacement sensor and a vibration exciter can be installed through the displacement sensor support and the vibration exciter support, the vibration exciter is used for generating excitation force to drive the measuring pipe to vibrate, and the displacement sensor is used for detecting the vibration state of the measuring pipe and forms a closed-loop excitation system with the vibration exciter to accurately calculate the flow of flowing water. Therefore, the flow is transmitted by the external processing device and displayed by the flow meter main body, the operation is simple, and the practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of flowmeters, in particular to a gate-type mass flowmeter. Background Art

[0002] With the increasing demand for fluid flow control and management in industries such as industry, agriculture, and construction, flow meters have emerged. The earliest flow meters can be traced back to ancient times, such as using inclined plates to measure the flow rate of water. With the advancement of science and technology, flow meters have been further improved and developed. Modern flow meters are designed and manufactured using advanced sensors, electronic technology, and computer technology, which can measure fluid flow more accurately and quickly, and provide real-time feedback and record data.

[0003] At present, a gate-type mass flowmeter in the prior art has a casing weight as large as possible, a small range of measurement sensitivity, a driving frequency close to the industrial frequency (50 Hz) and its harmonic frequency, and a high driving frequency. It cannot ensure that the phase difference of the measuring tube is linear within the entire flow measurement range, resulting in a large pressure loss and poor practicality. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art that the shell weight is as large as possible, the range of measurement sensitivity is small, the driving frequency is close to the industrial frequency (50 Hz) and its harmonic frequency, the driving frequency is not small, and the phase difference of the measuring tube in the entire flow measurement range cannot be guaranteed to be linear, resulting in large pressure loss and poor practicality, and a gate-type mass flowmeter is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gate-type mass flowmeter, including a main pipe, a connecting pipe is fixed to the top of the main pipe, a flowmeter body is installed on the top of the connecting pipe, connecting pipes are threadedly connected to both ends of the main pipe, connecting blocks are fixed on both sides of the bottom end of the main pipe, two measuring tubes are jointly installed at the bottom ends of the two connecting blocks, two symmetrical displacement sensor brackets are fixed on the outer wall of the measuring tube, an exciter bracket is fixed on the outer wall of the measuring tube, and a shell is fixed to the bottom end of the main pipe.

[0006] Preferably, bottom rings are fixed to the top outer walls of the two measuring tubes, bottom plates are fixed to the bottom ends of the two connecting blocks, connecting cavities matching the measuring tubes are provided in the bottom plates and connecting blocks, and the measuring tubes are fixed to the bottom plates via the bottom rings.

[0007] Preferably, a partition is fixed on the outer wall of the two measuring tubes below each bottom ring.

[0008] Preferably, a first flange is fixed to the top outer wall of the connecting pipe, a second flange is fixed to the bottom outer wall of the flow meter body, and the second flange is fixed to the first flange by bolts.

[0009] Preferably, a third flange is fixed on the outer wall of the two connecting pipes, a docking hole is provided in the two third flanges, and screw grooves matching the two connecting pipes are provided at both ends of the main pipe.

[0010] Preferably, the connecting block and the measuring tube are both arranged in the outer shell.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] In the utility model, through the setting of the measuring tube gate type, under the maximum flow condition, the speed inside the measuring tube is the largest at the bend, and the maximum value is 25.6 m / s, which meets the maximum flow rate limit discussed previously (the maximum flow rate limit in the tube is 30m / s). Under the maximum flow condition, the inlet pressure of the measuring tube is 0.288 MPa, and the average pressure at the outlet of the measuring tube is 0.155 MPa. The pressure loss of the water medium flowing through the measuring tube is 0.133 MPa, which meets the maximum pressure loss requirement of 0.15 MPa proposed in the previous discussion. Therefore, the optimized measuring tube meets the requirements of fluid flow. The displacement sensor and the exciter can be installed through the displacement sensor bracket and the exciter bracket. The exciter is used to generate an exciting force to drive the measuring tube to vibrate. The displacement sensor is used to detect the vibration state of the measuring tube and form a closed-loop excitation system with the exciter to accurately calculate the flow rate of its flowing water, so that it can be transmitted through the external processing device and displayed through the flow meter body. The operation is simple and the practicality is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional diagram of a gate-type mass flow meter is proposed for the utility model;

[0014] Figure 2 A schematic diagram of the measuring tube structure of a gate-type mass flowmeter is proposed for the utility model;

[0015] Figure 3 A schematic diagram of the measuring tube structure of a gate-type mass flowmeter is proposed for the utility model;

[0016] Figure 4 The utility model provides a schematic diagram of the main pipe structure of a gate-type mass flowmeter.

[0017] Legend: 1. Main pipe; 2. Connecting pipe; 3. Flowmeter body; 4. First flange; 5. Second flange; 6. Bolts; 7. Connecting pipe; 8. Screw groove; 9. Third flange; 10. Docking hole; 11. Housing; 12. Connecting block; 13. Bottom plate; 14. Measuring tube; 15. Bottom ring; 16. Partition; 17. Displacement sensor bracket; 18. Exciter bracket; 19. Connecting cavity. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Embodiment 1, as Figure 1-4 As shown, the utility model provides a gate-type mass flowmeter, including a main pipe 1, a connecting pipe 2 is fixed to the top of the main pipe 1, a flowmeter body 3 is installed on the top of the connecting pipe 2, connecting pipes 7 are threadedly connected to both ends of the main pipe 1, connecting blocks 12 are fixed on both sides of the bottom end of the main pipe 1, two measuring pipes 14 are jointly installed at the bottom ends of the two connecting blocks 12, two symmetrical displacement sensor brackets 17 are fixed on the outer wall of the measuring pipe 14, an exciter bracket 18 is fixed on the outer wall of the measuring pipe 14, and a shell 11 is fixed to the bottom end of the main pipe 1.

[0021] The effect achieved by the entire embodiment 1 is that the external pipeline is connected through two connecting pipes 7. When the flowing water enters the main pipe 1, the flowing water will flow through the guidance of the measuring pipe 14 and be discharged from the external pipeline connected to the connecting pipe 2 at the other end of the main pipe 1. The displacement sensor and the exciter can be installed through the displacement sensor bracket 17 and the exciter bracket 18. The exciter is used to generate an exciting force to drive the measuring tube 14 to vibrate, and the displacement sensor is used to detect the vibration state of the measuring tube 14 and form a closed-loop excitation system with the exciter to accurately calculate the flow rate of the flowing water, so that it can be transmitted through the external processing device and displayed through the flow meter body 3.

[0022] Embodiment 2, as Figure 1-4As shown, bottom rings 15 are fixed to the top outer walls of the two measuring tubes 14, bottom plates 13 are fixed to the bottom ends of the two connecting blocks 12, connecting cavities 19 matching the measuring tubes 14 are provided in the bottom plates 13 and the connecting blocks 12, the measuring tubes 14 are fixed to the bottom plates 13 through the bottom rings 15, partitions 16 are fixed to the outer walls of the two measuring tubes 14 below each bottom ring 15, a first flange 4 is fixed to the top outer wall of the connecting tube 2, a second flange 5 is fixed to the bottom outer wall of the flowmeter body 3, the second flange 5 is fixed to the first flange 4 through bolts 6, third flanges 9 are fixed to the outer walls of the two connecting tubes 7, docking holes 10 are provided in the two third flanges 9, screw grooves 8 matching the two connecting tubes 7 are provided at both ends of the main tube 1, and the connecting block 12 and the measuring tubes 14 are arranged in the housing 11.

[0023] The effect achieved by the entire embodiment 2 is that, through the provision of the third flange 9, the two connecting pipes 7 can be connected to external pipelines, and through the provision of the outer shell 11, the measuring tube 14 can be protected.

[0024] Working principle: When the device is in use, it is connected to external pipes through two connecting pipes 7. When the flowing water enters the main pipe 1, the flowing water will flow through the guide of the measuring pipe 14 and be discharged from the external pipe connected to the connecting pipe 2 at the other end of the main pipe 1. The displacement sensor and the exciter can be installed through the displacement sensor bracket 17 and the exciter bracket 18. The exciter is used to generate an exciting force to drive the measuring pipe 14 to vibrate, and the displacement sensor is used to detect the vibration state of the measuring pipe 14 and form a closed-loop excitation system with the exciter to accurately calculate the flow rate of the flowing water, so that it can be transmitted through the external processing device and displayed through the flow meter body 3.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A gate-type mass flowmeter, comprising a main pipe (1), characterized in that: A connecting pipe (2) is fixed to the top of the main pipe (1), a flow meter body (3) is installed on the top of the connecting pipe (2), connecting pipes (7) are threadedly connected to both ends of the main pipe (1), connecting blocks (12) are fixed to both sides of the bottom of the main pipe (1), two measuring pipes (14) are installed together at the bottom ends of the two connecting blocks (12), two symmetrical displacement sensor brackets (17) are fixed on the outer wall of the measuring pipe (14), an exciter bracket (18) is fixed on the outer wall of the measuring pipe (14), and a housing (11) is fixed to the bottom end of the main pipe (1).

2. A gate-type mass flowmeter according to claim 1, characterized in that: A bottom ring (15) is fixed to the top outer wall of the two measuring tubes (14), a bottom plate (13) is fixed to the bottom end of the two connecting blocks (12), a connecting cavity (19) matching the measuring tube (14) is provided in the bottom plate (13) and the connecting block (12), and the measuring tube (14) is fixed to the bottom plate (13) via the bottom ring (15).

3. A gate-type mass flowmeter according to claim 2, characterized in that: A partition plate (16) is fixed on the outer wall of the two measuring tubes (14) below each bottom ring (15).

4. A gate-type mass flowmeter according to claim 1, characterized in that: A first flange (4) is fixed to the top outer wall of the connecting pipe (2), and a second flange (5) is fixed to the bottom outer wall of the flow meter body (3), and the second flange (5) is fixed to the first flange (4) by bolts (6).

5. A gate-type mass flowmeter according to claim 1, characterized in that: A third flange (9) is fixed on the outer wall of the two connecting pipes (7), a docking hole (10) is provided in the two third flanges (9), and screw grooves (8) matching the two connecting pipes (7) are provided at both ends of the main pipe (1).

6. A gate-type mass flowmeter according to claim 1, characterized in that: The connecting block (12) and the measuring tube (14) are both arranged in the outer shell (11).

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