High-pressure gear flowmeter

Abstract

The utility model provides a high-pressure gear flowmeter, which relates to the technical field of flowmeters, and comprises a shell, two axle centers are arranged in the shell, magnetic steel is arranged on the outer walls of the two axle centers, gear assemblies are arranged on the outer walls of the two magnetic steel, the two gear assemblies are in meshed connection, and the two axle centers and the two gear assemblies are in meshed connection. And a front cover is arranged at the top end of the shell. Fluid enters a gear metering cavity formed by the gear assembly and the sealing rubber ring through the communicating pipe and then pushes the gear assembly to rotate. Due to the fact that the magnetic steel is arranged on the gear assembly and triggers the sensor on the front cover to generate an electric signal, the electric signal enters the electronic counter connected with an external circuit to be displayed, when the gear assembly rotates by a circle, a certain volume of fluid can be removed, and the volume of the fluid removed in unit time is the instantaneous flow rate. The cost is reduced, leakage of the coupler is avoided, and meanwhile the coupler can bear higher pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of flow meters, in particular to a high-pressure gear flow meter. Background Art

[0002] Gear flowmeter is a commonly used volume flow measurement instrument that calculates the flow rate by measuring the volume of the fluid passing through the gear cavity. It consists of a gear that rotates under the push of the fluid, and each rotation represents a certain volume flow rate. Traditional gear flowmeters are mainly used for flow measurement under low pressure and normal pressure conditions.

[0003] A high-pressure gear flowmeter in the current prior art, the traditional cylindrical gear flowmeter has a high cost, the coupling itself may leak, and the pressure it can withstand is low, and its practicality is poor. Utility Model Content

[0004] The utility model aims to solve the problems of high cost, possible leakage of the coupling itself, low pressure resistance and poor practicality of the conventional cylindrical gear flowmeter in the prior art, and proposes a high-pressure gear flowmeter.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-pressure gear flowmeter, including a shell, two shafts are arranged in the shell, magnets are arranged on the outer walls of the two shafts, gear assemblies are arranged on the outer walls of the two magnets, the two gear assemblies are meshingly connected, and a front cover is arranged on the top of the shell.

[0006] Preferably, a cylindrical pin is provided inside the top end of the shell, a hexagon socket head screw matching the cylindrical pin is provided inside the front cover, and the front cover and the shell are fixed by the cylindrical pin and the hexagon socket head screw.

[0007] Preferably, a sealing rubber ring is provided between the front cover and the housing, and openings are formed at both ends of the sealing rubber ring.

[0008] Preferably, the gear assembly is arranged at the top end of the housing, and a retaining ring is arranged at the top end of the housing on the outside of the two gear assemblies.

[0009] Preferably, a small gasket is provided on the outer wall of the axis, and the magnetic steel is provided on the top of the small gasket.

[0010] Preferably, a top cover is fixedly provided at the top end of the front cover by a pin, a connecting pipe is clamped in the top cover and the front cover, the bottom end of the connecting pipe is arranged on one side of the gear assembly, and a sensor is arranged on the outer wall of the connecting pipe.

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

[0012] In the utility model, after the fluid enters the gear metering cavity formed by the gear assembly and the sealing rubber ring through the connecting pipe, it pushes the gear assembly to rotate. Because there is a magnet on the gear assembly. The magnet triggers the sensor on the front cover to generate an electrical signal. The electrical signal enters the electronic counter connected to the external circuit for display. When the gear assembly rotates one circle, a certain volume of fluid will be discharged. The volume of fluid discharged per unit time is the instantaneous flow rate. In addition, the housing, front cover, gear assembly and top cover are all made of non-magnetic L stainless steel. It has a strong anti-corrosion effect. This structure eliminates the coupling of the traditional flow meter, which not only reduces the cost, but also eliminates the leakage of the coupling itself. At the same time, it can withstand higher pressures. The traditional flow meter with a coupling can withstand pressures below 6.3MPa, and this structure can exceed 10MPa. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A cross-sectional view of a high-pressure gear flowmeter is proposed for the utility model;

[0014] Figure 2 A schematic diagram of the internal structure of a housing of a high-pressure gear flowmeter is provided for the utility model;

[0015] Figure 3 A schematic diagram of the gear assembly structure of a high-pressure gear flowmeter is provided for the utility model;

[0016] Figure 4 The utility model provides a schematic structural diagram of a gear assembly of a high-pressure gear flowmeter.

[0017] Legend: 1. Hexagon socket head screw; 2. Front cover; 3. Sealing rubber ring; 4. Housing; 5. Magnet; 6. Cylindrical pin; 7. Axis; 8. Small gasket; 9. Gear assembly; 10. Retaining ring; 11. Connecting pipe; 12. Top cover; 13. Pin; 14. Sensor. 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 1-4As shown, the utility model provides a high-pressure gear flowmeter, including a shell 4, two shafts 7 are arranged in the shell 4, magnets 5 are arranged on the outer walls of the two shafts 7, gear assemblies 9 are arranged on the outer walls of the two magnets 5, the two gear assemblies 9 are meshingly connected, and a front cover 2 is arranged on the top of the shell 4.

[0021] The effect achieved by the entire embodiment 1 is that after the fluid enters the gear metering cavity formed by the gear assembly 9 and the sealing rubber ring 3 through the connecting tube 11, it pushes the gear assembly 9 to rotate. Because there is a magnet 5 on the gear assembly 9. The magnet 5 triggers the sensor 14 on the front cover to generate an electrical signal. The electrical signal enters the electronic counter connected to the external circuit for display. When the gear assembly 9 rotates one circle, a certain volume of fluid will be discharged. The volume of fluid discharged per unit time is the instantaneous flow rate. In addition, the housing 4, the front cover 2, the gear assembly 9 and the top cover 12 are all made of non-magnetic 316L stainless steel. It has a strong anti-corrosion effect.

[0022] Embodiment 2, as Figure 1-4 As shown, a cylindrical pin 6 is provided inside the top of the shell 4, a hexagon socket head screw 1 matching the cylindrical pin 6 is provided in the front cover 2, the front cover 2 and the shell 4 are fixed by the cylindrical pin 6 and the hexagon socket head screw 1, a sealing rubber ring 3 is provided between the front cover 2 and the shell 4, both ends of the sealing rubber ring 3 are provided with openings, a gear assembly 9 is provided at the top of the shell 4, a retaining ring 10 is provided at the top of the shell 4 on the outside of the two gear assemblies 9, a small gasket 8 is provided on the outer wall of the axis 7, a magnetic steel 5 is provided on the top of the small gasket 8, a top cover 12 is fixedly provided at the top of the front cover 2 by a pin 13, a connecting pipe 11 is clamped in the top cover 12 and the front cover 2, the bottom end of the connecting pipe 11 is provided on one side of the gear assembly 9, and a sensor 14 is provided on the outer wall of the connecting pipe 11.

[0023] The effect achieved by the entire embodiment 2 is that the structure eliminates the coupling of the traditional flow meter, which not only reduces the cost but also eliminates the leakage of the coupling itself, and can withstand higher pressure. The traditional flow meter with a coupling can withstand a pressure below 6.3MPa, while this structure can exceed 10MPa.

[0024] Working principle: When the device is used, the fluid enters the gear metering cavity formed by the gear assembly 9 and the sealing rubber ring 3 through the connecting tube 11, and then pushes the gear assembly 9 to rotate. Because there is a magnet 5 on the gear assembly 9. The magnet 5 triggers the sensor 14 on the front cover to generate an electrical signal. The electrical signal is displayed by the electronic counter connected to the external circuit. When the gear assembly 9 rotates one circle, a certain volume of fluid will be discharged. The volume of fluid discharged per unit time is the instantaneous flow rate. In addition, the housing 4, the front cover 2, the gear assembly 9 and the top cover 12 are all made of non-magnetic 316L stainless steel. It has a strong anti-corrosion effect. This structure eliminates the coupling of the traditional flowmeter, which not only reduces the cost, but also eliminates the leakage of the coupling itself. At the same time, it can withstand higher pressures. The pressure of the traditional flowmeter with a coupling is below 6.3MPa, and this structure can exceed 10MPa.

[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 high-pressure gear flow meter, comprising a housing (4), characterized in that: Two shafts (7) are arranged in the shell (4), and magnets (5) are arranged on the outer walls of the two shafts (7). Gear assemblies (9) are arranged on the outer walls of the two magnets (5), and the two gear assemblies (9) are meshingly connected. A front cover (2) is arranged at the top of the shell (4).

2. A high pressure gear flowmeter according to claim 1, characterized in that: A cylindrical pin (6) is disposed inside the top end of the housing (4), a hexagon socket head screw (1) matching the cylindrical pin (6) is disposed inside the front cover (2), and the front cover (2) and the housing (4) are fixed together via the cylindrical pin (6) and the hexagon socket head screw (1).

3. A high pressure gear flow meter according to claim 1, characterized in that: A sealing rubber ring (3) is provided between the front cover (2) and the housing (4), and openings are provided at both ends of the sealing rubber ring (3).

4. A high pressure gear flowmeter according to claim 1, characterized in that: The gear assembly (9) is arranged at the top end of the housing (4), and a retaining ring (10) is arranged at the top end of the housing (4) outside the two gear assemblies (9).

5. A high pressure gear flow meter according to claim 1, characterized in that: A small gasket (8) is arranged on the outer wall of the shaft (7), and the magnetic steel (5) is arranged on the top of the small gasket (8).

6. A high pressure gear flow meter according to claim 1, characterized in that: A top cover (12) is fixedly provided at the top end of the front cover (2) via a pin (13); a connecting pipe (11) is clamped between the top cover (12) and the front cover (2); the bottom end of the connecting pipe (11) is arranged on one side of the gear assembly (9); and a sensor (14) is arranged on the outer wall of the connecting pipe (11).

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