Stable turbine flowmeter

Abstract

The utility model relates to the technical field of turbine flow meters, and discloses a stable turbine flow meter which comprises a flow pipe, a connecting pipe is arranged on the left side of the upper end of the flow pipe, the connecting pipe and the flow pipe are fixed in a sealed mode, and a valve body is arranged at the upper end of the connecting pipe. The piston disc is arranged at the lower end in the valve body, a gas injection valve is arranged at the upper end of the valve body, and a pressure gauge is arranged at the upper end of the gas injection valve. According to the utility model, a structure for eliminating the water hammer is additionally arranged in the flow tube of the turbine flowmeter, so that the use stability of the turbine flowmeter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine flowmeters, in particular to a stable turbine flowmeter. Background Art

[0002] A turbine flowmeter is an instrument that measures fluid flow based on the rotation of a turbine. Its high accuracy, excellent repeatability and stability, wide measuring range, rapid response to flow changes, strong anti-interference capabilities, and easy signal transmission make it widely used in various fields.

[0003] When a valve is suddenly closed or a pump stops abruptly, the inertia of the pressurized water flow generates a shock wave. This water hammer effect causes a sharp increase in pressure within the pipeline. This sudden change in pressure can cause serious damage to the precision components within the turbine flowmeter, especially the impeller. The sudden stop or change in direction of high-speed flowing liquid generates a huge impact force, which may cause the impeller to deform, break, or become stuck, seriously affecting the accuracy and service life of the flowmeter. Even if the water hammer does not directly cause physical damage, the repeated pressure fluctuations may cause changes in the mechanical structure of the flowmeter, affecting the smooth rotation of the impeller and reducing measurement accuracy. Turbine flowmeters that are subject to water hammer for a long time may experience unstable or deviated readings. To address this issue, a stable turbine flowmeter is proposed. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a stable turbine flowmeter to solve the problems raised in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a stable turbine flowmeter, comprising:

[0008] A flow tube, wherein a connecting pipe is provided on the left side of the upper end of the flow tube, and the connecting pipe is sealed and fixed to the flow tube, and a valve body is provided on the upper end of the connecting pipe;

[0009] The piston disc is arranged at the lower end of the valve body. The upper end of the valve body is provided with an air injection valve, and the upper end of the air injection valve is provided with a pressure gauge.

[0010] Preferably, a turbine blade and a sensor are provided at the right end inside the flow tube, and a flow integrator is provided at the right side of the upper end outside the flow tube.

[0011] Preferably, a fixing block evenly distributed along a ring shape is installed on one side of the lower end of the outer portion of the connecting pipe, and the fixing block is rotatably connected to the connecting pipe.

[0012] Preferably, a screw is installed inside the fixing block through threaded engagement, and a limit block is provided at the upper end of the screw, which is used to rotate the screw and press down the outer edge of the fixed valve body.

[0013] Preferably, flanges are provided at both ends of the exterior of the flow tube, and the flanges are fixedly connected to the flow tube, and the flanges are used to connect the flow tube to the pipeline.

[0014] Preferably, a sealing gasket is provided on one side of the outer portion of the flange, and the sealing gasket is connected to the flange, and the sealing gasket improves the sealing performance when the flange is connected to the pipeline.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides a stable turbine flowmeter with the following features:

[0017] Beneficial effects:

[0018] The utility model provides a valve body inside the flow tube, and the piston disc inside the valve body cooperates with the air pressure to eliminate the shock wave generated by the sudden stop of the water flow, thereby preventing the shock wave from damaging the turbine flowmeter. In this way, the use of the turbine flowmeter is more stable, and the measurement accuracy of the turbine flowmeter will not be reduced due to the influence of water hammer, thereby solving the problems raised in the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0020] Figure 2 This is a cross-sectional view of the internal structure of the flow tube and valve body of the utility model;

[0021] Figure 3 For the utility model Figure 2 A partial enlarged view of area A in the middle.

[0022] In the figure: 1. Flow tube; 2. Flange; 3. Sealing gasket; 4. Turbine blade; 5. Sensor; 6. Flow totalizer; 7. Connecting pipe; 8. Fixing block; 9. Screw; 10. Limit block; 11. Valve body; 12. Piston disc; 13. Air injection valve; 14. Pressure gauge. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The utility model provides a technical solution, a stable turbine flowmeter, please refer to Figure 1 、 Figure 2 and Figure 3 ,include:

[0025] Flow tube 1, a connecting pipe 7 is provided on the left side of the upper end of the flow tube 1, and the connecting pipe 7 is sealed and fixed to the flow tube 1, and a valve body 11 is provided on the upper end of the connecting pipe 7;

[0026] The piston disc 12 is arranged at the lower end of the valve body 11 . The upper end of the valve body 11 is provided with an air injection valve 13 , and the upper end of the air injection valve 13 is provided with a pressure gauge 14 .

[0027] See also Figure 1 and Figure 2 The right end of the flow tube 1 is provided with a turbine blade 4 and a sensor 5, and the right side of the upper end of the flow tube 1 is provided with a flow integrator 6.

[0028] See also Figure 3 One side of the lower end of the outer portion of the connecting pipe 7 is provided with a fixing block 8 evenly distributed along the ring, and the fixing block 8 is rotatably connected to the connecting pipe 7.

[0029] See also Figure 3 A screw 9 is installed inside the fixed block 8 through threaded cooperation. A limit block 10 is provided on the upper end of the screw 9. The limit block 10 is used to rotate the screw 9 and press down the outer edge of the fixed valve body 11.

[0030] See also Figure 1 and Figure 2 Flanges 2 are provided at both ends of the outside of the flow tube 1, and the flanges 2 are fixedly connected to the flow tube 1. The flanges 2 are used to connect the flow tube 1 to the pipeline.

[0031] See also Figure 1 and Figure 2 A sealing gasket 3 is provided on one side of the outside of the flange 2, and the sealing gasket 3 is connected to the flange 2. The sealing gasket 3 improves the sealing performance when the flange 2 is connected to the pipeline.

[0032] This solution: When the pressure in the pipeline suddenly changes, a shock wave propagates along the pipeline, and the shock wave acts on the piston disc 12 to make it move along the valve body 11. The movement of the piston disc 12 is affected by the combined effect of the internal air pressure of the valve body 11 and the size of the shock wave, forming a dynamic balance, thereby eliminating water hammer. In this way, the stability of the pipeline system is maintained. When the valve body 11 needs to be disassembled, the limit block 10 is rotated so that the screw 9 rotates and rises accordingly. After disengaging from the outer edge of the valve body 11, the limit block 10 is flipped outward to disengage from the valve body 11, thereby canceling the fixation of the valve body 11, and the valve body 11 can then be disassembled.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable turbine flowmeter, characterized in that: include: A flow tube (1), wherein a connecting pipe (7) is provided on the left side of the upper end of the flow tube (1), and the connecting pipe (7) is sealed and fixed to the flow tube (1), and a valve body (11) is provided at the upper end of the connecting pipe (7); The piston disc (12) is arranged at the lower end inside the valve body (11); the upper end of the valve body (11) is provided with an air injection valve (13); and the upper end of the air injection valve (13) is provided with a pressure gauge (14).

2. A stable turbine flowmeter according to claim 1, characterized in that: The right end of the flow tube (1) is provided with a turbine blade (4) and a sensor (5), and the right side of the upper end of the flow tube (1) is provided with a flow totalizer (6).

3. A stable turbine flowmeter according to claim 1, characterized in that: One side of the lower end of the outer portion of the connecting pipe (7) is provided with a fixing block (8) evenly distributed along a ring shape, and the fixing block (8) is rotatably connected to the connecting pipe (7).

4. A stable turbine flowmeter according to claim 3, characterized in that: A screw rod (9) is installed inside the fixing block (8) through threaded engagement, and a limiting block (10) is provided at the upper end of the screw rod (9).

5. A stable turbine flowmeter according to claim 1, characterized in that: Both ends of the outside of the flow tube (1) are provided with flanges (2), and the flanges (2) are fixedly connected to the flow tube (1).

6. A stable turbine flowmeter according to claim 5, characterized in that: A sealing gasket (3) is provided on one side of the outside of the flange (2), and the sealing gasket (3) is connected to the flange (2).

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