Double-probe vortex shedding flowmeter

Abstract

The utility model belongs to the technical field of vortex shedding flowmeters, and particularly relates to a double-probe vortex shedding flowmeter which comprises a measuring tube, flanges are fixedly connected to the two ends of the measuring tube, first connecting seats are fixedly connected to the top and the bottom of a probe fixing seat, and connecting wires are fixedly connected to the end of a first probe and the end of a second probe. Limiting frames are clamped outside the probe fixing seat, limiting rods are in threaded connection with the outer portions of the two-way threaded rods, second limiting columns are fixedly connected to the opposite faces of the two limiting rods, and limiting grooves are formed in the ends of the limiting rods. By arranging the first probe, the second probe, the limiting frame, the two-way threaded rod, the second limiting column and the clamping groove, it can be avoided that due to corrosion of a connector, the overhaul difficulty of the flowmeter is increased; and by arranging the first limiting column and the inserting groove, the limiting rod can move stably, and then the clamping block is inserted into the inserting groove, so that the flowmeter display can be mounted and dismounted.

Description

Technical Field

[0001] This utility model belongs to the field of vortex flow meter technology, specifically a dual-probe vortex flow meter. Background Technology

[0002] The dual-probe vortex flow meter is an instrument based on the Karman vortex street principle, used to measure the volumetric flow rate of gases, steam, or liquids. It can also measure the volumetric or mass flow rate under standard conditions. Its main applications include flow measurement of fluids in industrial pipelines, such as gases, liquids, steam, and other media.

[0003] Existing dual-probe vortex flow meters are usually fixed with limit screws, but the limit screws are prone to corrosion due to environmental factors, making it inconvenient to disassemble and maintain the device. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-probe vortex flow meter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a dual-probe vortex flow meter is provided, including a measuring tube, flanges fixedly connected to both ends of the measuring tube, a probe mounting base fixedly connected to the circumferential surface of the measuring tube, a first connecting base fixedly connected to the top and bottom of the probe mounting base, a first probe and a second probe respectively installed inside the two first connecting bases, connecting wires fixedly connected to the ends of the first probe and the second probe, and a connector installed inside the first connecting base, with the connecting wire passing through the connector;

[0006] The probe mounting base has an external locking limit frame, and the internal locking frame is rotatably connected to a bidirectional threaded rod. The external thread of the bidirectional threaded rod is connected to a limit rod. There are two limit rods, which are symmetrically distributed. The opposite surfaces of the two limit rods are fixedly connected to a second limit post. The end of the connector near the limit rod has a slot, and the second limit post engages with the inside of the slot. The end of the limit rod has a limit groove, and the connecting line is located inside the limit groove.

[0007] Optionally, each of the two first connectors has an annular groove at the end away from the probe fixing seat, and a sealing ring is installed inside the annular groove, with the connector fitting against the outer surface of the sealing ring.

[0008] Optionally, a first limiting post is fixedly connected inside the limiting frame, and both limiting rods are slidably connected to the outside of the first limiting post.

[0009] Optionally, a handle is installed on the top of the bidirectional threaded rod, and the outside of the handle is provided with anti-slip texture.

[0010] Optionally, a second connector is inserted into the end of each of the two connecting lines away from the first and second probes. A fixing post is fixedly connected to the rear end face of the second connector, and a locking block is fixedly connected to the end of the fixing post away from the second connector.

[0011] Optionally, the probe mounting base has a slot inside, the card block is inserted into the slot, and the front end of the second connecting base is fixedly connected to a flow meter display.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model is equipped with a first probe, a second probe, a limiting frame, a bidirectional threaded rod, a second limiting post, and a slot. In use, the first probe and the second probe are installed inside the measuring tube from the top and bottom ends, respectively. The first probe and the second probe are limited by the connector. Then, the limiting frame is engaged with the probe fixing seat. By rotating the bidirectional threaded rod, the limiting rods on both sides simultaneously drive the second limiting post to engage with the inside of the slot, thereby achieving the limiting and fixing of the connector. No threaded connection is required, which can avoid the increased difficulty of flow meter maintenance due to rust on the connector.

[0014] 2. This utility model is provided with a first limiting post and a slot. During the movement of the limiting rod, it is limited by the first limiting post, so that the limiting rod can move stably. Then, the card block is inserted into the slot, which facilitates the installation and removal of the flow meter display. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0018] Figure 3 This is a partial structural schematic diagram of the present invention;

[0019] Figure 4 This is a side view of the structure of this utility model.

[0020] In the diagram: 1. Measuring tube; 2. Flange; 3. Probe mounting base; 4. First connecting base; 5. Connector; 6. Annular groove; 7. Sealing ring; 8. First probe; 9. Limiting bracket; 10. Bidirectional threaded rod; 11. First limiting post; 12. Limiting rod; 13. Limiting groove; 14. Second limiting post; 15. Slot; 16. Second probe; 17. Connecting wire; 18. Second connecting base; 19. Slot; 20. Locking block; 21. Fixing post; 22. Flow meter display. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] Reference Figure 1-4 A dual-probe vortex flow meter includes a measuring tube 1, flanges 2 fixedly connected to both ends of the measuring tube 1, a probe mounting base 3 fixedly connected to the circumference of the measuring tube 1, a first connecting base 4 fixedly connected to the top and bottom of the probe mounting base 3, a first probe 8 and a second probe 16 respectively installed inside the two first connecting bases 4, a connecting wire 17 fixedly connected to the ends of the first probe 8 and the second probe 16, and a connector 5 installed inside the first connecting base 4, with the connecting wire 17 passing through the connector 5.

[0023] The probe mounting base 3 is externally engaged with a limiting frame 9. The limiting frame 9 is internally rotatably connected to a bidirectional threaded rod 10. The external thread of the bidirectional threaded rod 10 is connected to a limiting rod 12. There are two limiting rods 12, which are symmetrically distributed. The opposite surfaces of the two limiting rods 12 are fixedly connected to a second limiting post 14. The end of the connector 5 near the limiting rod 12 is provided with a slot 15, and the second limiting post 14 is engaged with the slot 15. The end of the limiting rod 12 is provided with a limiting groove 13, and the connecting line 17 is located inside the limiting groove 13. When the device is in use, the first probe 8 and the second probe 16 are installed inside the measuring tube 1 from the top and bottom ends, respectively. The first probe 8 and the second probe 16 are installed and limited by the connector 5. Then, the limiting frame 9 is engaged with the probe fixing seat 3. By rotating the bidirectional threaded rod 10, the limiting rods 12 on both sides simultaneously drive the second limiting post 14 to engage with the inside of the slot 15, thereby achieving the limiting and fixing of the connector 5. There is no need for threaded connection, which can avoid the increased difficulty of flow meter maintenance due to corrosion of the connector 5.

[0024] Both first connecting seats 4 have annular grooves 6 at their ends away from the probe fixing seat 3. A sealing ring 7 is installed inside the annular groove 6, and the connecting head 5 is in contact with the outer surface of the sealing ring 7. By pressing the sealing ring 7 with the connecting head 5, the sealing performance of the connecting head 5 can be enhanced, and the sealing ring 7 can also be used to prevent corrosion between the connecting head 5 and the first connecting seat 4.

[0025] The limiting frame 9 has a first limiting post 11 fixedly connected inside, and both limiting rods 12 are slidably connected to the outside of the first limiting post 11. The first limiting post 11 limits the movement path of the two limiting rods 12, thereby enhancing the stability of the movement of the two limiting rods 12.

[0026] A handle is mounted on the top of the double-threaded rod 10, and the outside of the handle is provided with anti-slip texture. The double-threaded rod 10 is rotated by using the handle, making it easy to rotate.

[0027] Both connecting wires 17 have a second connecting seat 18 inserted at the end furthest from the first probe 8 and the second probe 16. A fixing post 21 is fixedly connected to the rear end face of the second connecting seat 18, and a locking block 20 is fixedly connected to the end of the fixing post 21 furthest from the second connecting seat 18. The connection between the connecting wires 17 and the second connecting seat 18 makes it easy to install and remove the connecting wires 17.

[0028] The probe mounting base 3 has a slot 19 inside, and the locking block 20 is inserted into the slot 19. The flow meter display 22 is fixedly connected to the front end of the second connecting base 18. By using the locking block 20 to insert into the slot 19, the flow meter display 22 can be quickly installed.

[0029] The measuring tube 1 is equipped with a vortex generator for use with two probes. When in use, gas, liquid or steam is injected into the measuring tube 1. After being detected by the two probes, the signal is transmitted to the second connector 18 through the connecting line 17. The second connector 18 is equipped with a frequency detector and a signal converter. The output signal is displayed through the flow meter display 22.

[0030] Working principle: In use, the first probe 8 and the second probe 16 are installed inside the measuring tube 1 from the top and bottom ends respectively. The first probe 8 and the second probe 16 are installed and limited by the connector 5. Then, the limiting frame 9 is engaged with the outside of the probe fixing seat 3. By rotating the bidirectional threaded rod 10, the limiting rods 12 on both sides simultaneously drive the second limiting post 14 to engage with the inside of the slot 15, thereby realizing the limiting and fixing of the connector 5. No threaded connection is required, which can avoid the increased difficulty of flow meter maintenance due to rust on the connector 5.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dual-probe vortex flow meter, comprising a measuring tube (1), characterized in that: Flanges (2) are fixedly connected to both ends of the measuring tube (1). A probe mounting base (3) is fixedly connected to the circumferential surface of the measuring tube (1). A first connecting base (4) is fixedly connected to the top and bottom of the probe mounting base (3). A first probe (8) and a second probe (16) are respectively installed inside the two first connecting bases (4). A connecting wire (17) is fixedly connected to the ends of the first probe (8) and the second probe (16). A connector (5) is installed inside the first connecting base (4), and the connecting wire (17) passes through the connector (5). The probe mounting base (3) is externally engaged with a limiting frame (9). The limiting frame (9) is internally rotatably connected with a bidirectional threaded rod (10). The external thread of the bidirectional threaded rod (10) is connected with a limiting rod (12). There are two limiting rods (12) and they are symmetrically distributed. The opposite surfaces of the two limiting rods (12) are fixedly connected with second limiting posts (14). The connector (5) has a slot (15) at one end near the limiting rod (12), and the second limiting post (14) engages with the slot (15). The end of the limiting rod (12) has a limiting groove (13), and the connecting line (17) is located inside the limiting groove (13).

2. The dual-probe vortex flow meter as described in claim 1, characterized in that: Both of the first connectors (4) have annular grooves (6) at the ends away from the probe fixing seat (3). A sealing ring (7) is installed inside the annular groove (6), and the connector (5) is in contact with the outer surface of the sealing ring (7).

3. The dual-probe vortex flow meter as described in claim 1, characterized in that: The limiting frame (9) is internally fixedly connected to a first limiting post (11), and both limiting rods (12) are externally slidably connected to the first limiting post (11).

4. The dual-probe vortex flow meter as described in claim 1, characterized in that: The top of the bidirectional threaded rod (10) is equipped with a handle, and the outside of the handle is provided with anti-slip texture.

5. The dual-probe vortex flow meter as described in claim 1, characterized in that: The ends of the two connecting lines (17) away from the first probe (8) and the second probe (16) are each connected to a second connecting seat (18). A fixing post (21) is fixedly connected to the rear end face of the second connecting seat (18). A locking block (20) is fixedly connected to the end of the fixing post (21) away from the second connecting seat (18).

6. The dual-probe vortex flow meter as described in claim 5, characterized in that: The probe mounting base (3) has a slot (19) inside, and the card block (20) is inserted into the slot (19). The front end of the second connecting base (18) is fixedly connected to the flow meter display (22).

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