Integrated vortex shedding flowmeter

Abstract

The utility model provides an integrated vortex shedding flowmeter which comprises a detection pipeline, one end of the detection pipeline is connected with an air source pipeline, and the other end of the detection pipeline is connected with a conveying pipeline. Compared with the prior art, the gas flow detection device has the advantages that gas output by the gas source pipeline firstly reaches the vortex generation cavity in the detection pipeline, corresponding gas vortex is generated in the vortex generation cavity, the piezoelectric sensor detects a vortex signal and transmits the vortex signal to the interior of the meter head at the moment, flow detection is facilitated, then the gas continuously advances forwards, the blocking assembly is extruded, and the gas flow is detected. When countercurrent gas exists in the conveying pipeline, the countercurrent gas penetrates through the interior of the fire extinguishing valve element, open fire is prevented, and when the countercurrent gas reaches the interior of the valve element cavity, the blocking assembly plays a limiting role. The effect of intercepting countercurrent gas is achieved in the valve element cavity, and the flowmeter is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to an integrated vortex flowmeter, belonging to the field of flowmeters. Background Technique

[0002] The integrated vortex flowmeter is a new type of flowmeter for measuring the flow rate of fluids in closed pipelines based on the Karman vortex street principle, and can directly measure common gases (natural gas, nitrogen, compressed gas), steam, high-temperature liquids, corrosive media, etc.

[0003] When the integrated vortex flowmeter is used to measure dangerous gases such as flammable and explosive gases, due to the lack of corresponding one-way check structure and flame retardant structure inside its detection pipeline, in the event of a safety accident, the impact gas inside the pipeline is likely to flow reversely, which not only easily impacts the vortex generator and piezoelectric sensor inside the detection pipeline, causing damage to the integrated vortex flowmeter, but also easily reaches the gas source of the integrated vortex flowmeter along the detection pipeline, triggering a greater safety accident. Content of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide an integrated vortex flowmeter.

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

[0006] An integrated vortex flowmeter includes a detection pipeline, one end of the detection pipeline is connected with a gas source pipeline, the other end of the detection pipeline is connected with a conveying pipeline, the top of the detection pipeline is installed with a meter head through a communicating pipe, the interior of the detection pipeline is divided into a vortex generation chamber, a valve core chamber, and an installation chamber, a blocking component is arranged in the valve core chamber, and a fire extinguishing valve core is arranged inside the installation chamber.

[0007] Further, the fire extinguishing valve core is a circular long plate, and inner fire fine channels are evenly arranged on the fire extinguishing valve core.

[0008] Further, a vortex generator is arranged in the vortex generation chamber, the vortex generator includes multiple connecting rods fixed on the inner wall of the vortex generation chamber, the other ends of the connecting rods are jointly fixed with a bearing, a rotating rod is fixedly arranged in a penetrating manner inside the inner ring of the bearing, and vortex blades are installed on the outer surface of the rotating rod.

[0009] Further, the number of the vortex blades is multiple, and they are arranged in multiple rows, and the interior of the vortex generation chamber is conical.

[0010] Further, the blocking assembly includes a fixing plate and a secondary fixing plate fixed inside the valve core cavity. Both the fixing plate and the secondary fixing plate are circular plates. A round rod is slidably penetrated through the secondary fixing plate. A blocking block is fixedly provided at the end of the round rod. A spring is also sleeved on the outer surface of the round rod. One end of the spring is fixed to the blocking block, and the other end of the spring is fixed to the outer side surface of the secondary fixing plate.

[0011] Further, a blocking groove corresponding to the blocking block is formed on the fixing plate.

[0012] Further, the gas source pipeline and the conveying pipeline are hermetically connected to the end of the detection pipeline. The gas source pipeline and the conveying pipeline are respectively inserted into the inner end of the detection pipeline. Rubber sealing rings are sleeved on the outer surfaces of both the gas source pipeline and the conveying pipeline. A sealing cylinder is also fixedly sleeved on the outer surfaces of the gas source pipeline and the conveying pipeline. The sealing cylinder is sleeved on the outer end of the detection pipeline, and a secondary rubber sealing ring is adhesively provided on the inner wall of the sealing cylinder.

[0013] Further, a sleeve is sleeved on the outer surface of the connecting pipe. An injection water space is formed between the sleeve and the connecting pipe. A water inlet pipe and a water outlet pipe with control valves are provided on the sleeve.

[0014] The beneficial effects of the present utility model:

[0015] By installing the gas source pipeline and the conveying pipeline at both ends of the detection pipeline respectively and with a sealed installation between them, it is ensured that no leakage will occur at the subsequent connection points.

[0016] The gas output from the gas source pipeline first reaches the vortex generation cavity inside the detection pipeline, and corresponding gas vortices are generated inside it. At this time, the piezoelectric sensor detects the signal of the vortices and transmits it to the inside of the meter head, which is convenient for detecting the flow rate. Subsequently, the gas continuously advances forward, squeezing the blocking assembly, making the inside of the valve core cavity conductive, so that the gas enters the second half of the installation cavity and finally passes through the inside of the valve core cavity and enters the conveying pipeline.

[0017] When there is reverse flow gas inside the conveying pipeline, it first passes through the inside of the fire extinguishing valve core to prevent open fire. Then when it reaches the inside of the valve core cavity, due to the limiting effect of the blocking assembly, the reverse flow gas is intercepted inside the valve core cavity to prevent damage to the integrated vortex flowmeter or entry into the gas source pipeline. Brief Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 The front view of an integrated vortex flowmeter of the present invention;

[0020] Figure 2 The schematic diagram of the detection pipeline of an integrated vortex flowmeter of the present invention;

[0021] Figure 3 The schematic diagram of the gas source pipeline of an integrated vortex flowmeter of the present invention;

[0022] Figure 4 The schematic diagram of the sealing cylinder of an integrated vortex flowmeter of the present invention.

[0023] In the figure: 1. Detection pipeline; 2. Gas source pipeline; 3. Delivery pipeline; 4. Connecting pipe; 5. Meter head; 6. Vortex generation chamber; 7. Spool chamber; 8. Installation chamber; 9. Fire extinguishing spool; 10. Fire extinguishing fine channel; 11. Connecting rod; 12. Bearing; 13. Rotating rod; 14. Vortex blade; 15. Fixed plate; 16. Sub-fixed plate; 17. Round rod; 18. Blocking block; 19. Spring; 20. Rubber sealing ring; 21. Sealing cylinder; 22. Sub-rubber sealing ring; 23. Sleeve; 24. Water injection space; 25. Water inlet pipe; 26. Water outlet pipe. Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] Please refer to Figure 1-2 , the present invention provides a technical solution: an integrated vortex flowmeter, including a detection pipeline 1, one end of the detection pipeline 1 is connected to a gas source pipeline 2, the other end of the detection pipeline 1 is connected to a delivery pipeline 3, the top of the detection pipeline 1 is installed with a meter head 5 through a connecting pipe 4, the inside of the detection pipeline 1 is divided into a vortex generation chamber 6, a spool chamber 7, and an installation chamber 8, a blocking component is arranged in the spool chamber 7, a fire extinguishing spool 9 is arranged inside the installation chamber 8, and a piezoelectric sensor is installed inside the connecting pipe 4.

[0026] Refer to Figure 2 , the fire extinguishing valve core 9 is a circular long plate, and fire extinguishing fine channels 10 are evenly arranged on the fire extinguishing valve core 9. The fire extinguishing fine channels 10 play a role in flame retardancy. That is, when a flame flows through the interior of the fire extinguishing channel, the fire extinguishing channel is relatively long, so the advancing end of the flame is continuously cooled until the flame is extinguished when it advances, improving the safety of use.

[0027] Refer to Figure 1-2 , a vortex generator is arranged in the vortex generating cavity 6. The vortex generator includes multiple connecting rods 11 fixed on the inner wall of the vortex generating cavity 6. The other ends of the connecting rods 11 are jointly fixed with a bearing 12. A rotating rod 13 is fixedly arranged through the inner ring of the bearing 12. A vortex blade 14 is installed on the outer surface of the rotating rod 13. The number of the vortex blades 14 is multiple and is arranged in multiple rows. The interior of the vortex generating cavity 6 is conical. The gas output through the gas source pipeline 2 first reaches the vortex generating cavity 6 inside the detection pipeline 1. The interior of the vortex generating cavity 6 is conical. Components such as the vortex blade 14, the rotating rod 13, and the bearing are designed in the conical inner space. The inner conical space can be directly seen in Figure 1 . The gas vortex blade 14 generates rotation, ultimately accelerating the formation of gas eddy currents. At this time, the piezoelectric sensor detects the signal of the eddy current and transmits it to the inside of the meter head 5, facilitating the detection of the flow rate. Subsequently, the gas continuously advances forward, squeezing the blocking assembly, making the interior of its valve core cavity 7 conductive, so that the gas enters the latter half of the installation cavity 8.

[0028] Refer to Figure 1-2 , the blocking assembly includes a fixing plate 15 and a secondary fixing plate 16 fixed inside the valve core cavity 7. Both the fixing plate 15 and the secondary fixing plate 16 are circular plates. A round rod 17 is slidably arranged through the secondary fixing plate 16. A blocking block 18 is fixed at the end of the round rod 17. A spring 19 is also sleeved on the outer surface of the round rod 17. One end of the spring 19 is fixed to the blocking block 18, and the other end of the spring 19 is fixed to the outer side of the secondary fixing plate 16. A blocking groove corresponding to the blocking block 18 is opened on the fixing plate 15. Air holes are evenly opened on the fixing plate 15. The gas continuously advances forward, squeezing the blocking block 18 to move to one side, and opening the part where the blocking block 18 contacts the fixing plate 15, so that the gas can enter the interior of the installation cavity 8 along the fixing plate 15 and the secondary fixing plate 16.

[0029] Refer to Figure 1 and Figure 3, the gas source pipeline 2 and the conveying pipeline 3 are hermetically connected to the end of the detection pipeline 1. The gas source pipeline 2 and the conveying pipeline 3 are respectively inserted into the inner end of the detection pipeline 1, and rubber sealing rings 20 are sleeved on the outer surfaces of the gas source pipeline 2 and the conveying pipeline 3. A sealing cylinder 21 is fixedly sleeved on the outer surfaces of the gas source pipeline 2 and the conveying pipeline 3. The sealing cylinder 21 is sleeved on the outer end of the detection pipeline 1, and a secondary rubber sealing ring 22 is adhesively provided on the inner wall of the sealing cylinder 21.

[0030] The gas source pipeline 2 and the conveying pipeline 3 are respectively inserted into the gas source pipeline 2 and the conveying pipeline 3, and the rubber sealing rings 20 sleeved on their outer surfaces are in extrusion contact with the inner part of the end of the detection pipeline 1 to achieve a primary sealed docking. Secondly, the sealing cylinder 21 will be sleeved on the outer surface of the end of the detection pipeline 1, and the secondary rubber sealing ring 22 will wrap the outer surface of the end of the detection pipeline 1 to achieve a secondary sealed docking. It is necessary to provide a conventional threaded hole on the sealing cylinder 21, and cooperate with a screw to be screwed in. Finally, the screw is tightened against the outer surface of the detection pipeline 1 to complete the fixation among the detection pipeline 1, the gas source pipeline 2, and the conveying pipeline 3.

[0031] Refer to Figure 1 and Figure 4 , a sleeve 23 is sleeved on the outer surface of the connecting pipe 4. An injection space 24 is formed between the sleeve 23 and the connecting pipe 4. A water inlet pipe 25 and a water outlet pipe 26 with control valves are provided on the sleeve 23. The sleeve 23 and the connecting pipe 4 are integrally formed. An injection space 24 is formed between the sleeve 23 and the connecting pipe 4. Water is injected into the injection space 24. The water absorbs the surface temperature of the connecting pipe 4 and performs heat absorption treatment on the surface of the connecting pipe 4 to avoid excessive temperature being transmitted to the meter head 5 through the connecting pipe 4 and causing damage to the meter head 5.

[0032] During specific operation, the gas source pipeline 2 and the conveying pipeline 3 are respectively installed at both ends of the detection pipeline 1, and are hermetically installed between them to ensure that no leakage will occur at the subsequent connection points. The gas output through the gas source pipeline 2 first reaches the vortex generation chamber 6 inside the detection pipeline 1, and corresponding gas vortices are generated inside it. At this time, the piezoelectric sensor detects the signal of the vortices and transmits it to the inside of the meter head 5 for convenient detection of the flow rate. Subsequently, the gas continuously advances forward, squeezing the blocking assembly, making its valve core chamber 7 internally conduct, so that the gas enters the second half of the installation chamber 8 and then passes through the inside of the valve core chamber 7 and enters the conveying pipeline 3. When there is reverse flow gas in the conveying pipeline, it first passes through the inside of the fire extinguishing valve core 9 to prevent open fire. Then when it reaches the inside of the valve core chamber 7, due to the limiting effect of the blocking assembly, the reverse flow gas is intercepted inside the valve core chamber 7 to prevent damage to the integrated vortex flowmeter or entry into the gas source pipeline.

[0033] Although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in various embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated vortex flowmeter, characterized in that: It includes a detection pipeline (1), one end of the detection pipeline (1) is connected to a gas source pipeline (2), the other end of the detection pipeline (1) is connected to a conveying pipeline (3), the top end of the detection pipeline (1) is installed with a meter head (5) through a connecting pipe (4), the interior of the detection pipeline (1) is divided into a vortex generation chamber (6), a valve core chamber (7), and an installation chamber (8), a blocking component is arranged in the valve core chamber (7), a fire extinguishing valve core (9) is arranged inside the installation chamber (8), and a piezoelectric sensor is installed inside the connecting pipe (4).

2. The integrated vortex flowmeter according to claim 1, wherein: The fire extinguishing valve core (9) is a circular long plate, and fire extinguishing fine channels (10) are evenly opened on the fire extinguishing valve core (9).

3. The integrated vortex flowmeter according to claim 2, characterized in that: A vortex generator is arranged in the vortex generation chamber (6), the vortex generator includes multiple connecting rods (11) fixed on the inner wall of the vortex generation chamber (6), the other ends of the connecting rods (11) are jointly fixed with a bearing (12), a rotating rod (13) is fixedly arranged through the inner ring of the bearing (12), and vortex blades (14) are installed on the outer surface of the rotating rod (13).

4. The integrated vortex flowmeter according to claim 3, characterized in that: The number of the vortex blades (14) is multiple, and they are arranged in multiple rows, and the interior of the vortex generation chamber (6) is conical.

5. An integrated vortex flowmeter according to claim 4, characterized in that: The blocking component includes a fixing plate (15) and a secondary fixing plate (16) fixed inside the valve core chamber (7), both the fixing plate (15) and the secondary fixing plate (16) are circular plates, a round rod (17) is slidably penetrated through the secondary fixing plate (16), a blocking block (18) is fixed at the end of the round rod (17), a spring (19) is also sleeved on the outer surface of the round rod (17), one end of the spring (19) is fixed to the blocking block (18), and the other end of the spring (19) is fixed to the outer side surface of the secondary fixing plate (16).

6. An integrated vortex flowmeter according to claim 5, characterized in that: A blocking groove corresponding to the blocking block (18) is opened on the fixing plate (15), and air permeation holes are evenly opened on the fixing plate (15).

7. An integrated vortex flowmeter according to claim 6, characterized in that: The gas source pipeline (2) and the conveying pipeline (3) are hermetically connected to the end of the detection pipeline (1), the gas source pipeline (2) and the conveying pipeline (3) are respectively inserted into the inner end of the detection pipeline (1), and rubber sealing rings (20) are sleeved on the outer surfaces of the gas source pipeline (2) and the conveying pipeline (3), a sealing cylinder (21) is also fixedly sleeved on the outer surfaces of the gas source pipeline (2) and the conveying pipeline (3), the sealing cylinder (21) is sleeved on the outer end of the detection pipeline (1), and a secondary rubber sealing ring (22) is pasted on the inner wall of the sealing cylinder (21).

8. An integrated vortex flowmeter according to claim 7, characterized in that: A sleeve (23) is sleeved on the outer surface of the connecting pipe (4), a water injection space (24) is formed between the sleeve (23) and the connecting pipe (4), and a water inlet pipe (25) and a water outlet pipe (26) with control valves are arranged on the sleeve (23).

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