CN213543669U

CN213543669U - Automatic buffering spinner type precession vortex flowmeter

Info

Publication number: CN213543669U
Application number: CN202022492975.4U
Authority: CN
Inventors: 王辉
Original assignee: Tianjin City Xin Sheng Chang Petroleum Machinery Manufacturing Co ltd
Current assignee: Tianjin City Xin Sheng Chang Petroleum Machinery Manufacturing Co ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-06-25
Anticipated expiration: 2030-11-02

Abstract

An automatic buffer spinner type precession vortex flowmeter comprises a shell, a supporting structure, a fluid director, a sensor, a turbine, a bearing and a buffer structure, wherein a fluid inlet and a fluid outlet are respectively formed in two ends of the shell, the supporting structure is respectively arranged at two ends inside the shell, the turbine is rotatably connected with the supporting structure at the two ends through the bearing, the fluid director is arranged at one end, close to the fluid inlet, inside the shell, the buffer structure is mounted on the fluid director, the buffer structure is composed of a rotating shaft, a buffer plate, a first magnetic block, a second magnetic block and a travel switch, the buffer plate is rotatably mounted on the fluid director through the rotating shaft, the first magnetic block is arranged at one end, far away from the fluid inlet, of the buffer plate, the second magnetic block is arranged at a position, corresponding to. The utility model discloses can cushion automatically according to the flow size and adjust, avoid large-traffic direct high-speed impact vortex generator, guarantee its measuring accuracy, reduce later maintenance and change, practice thrift economic cost.

Description

Automatic buffering spinner type precession vortex flowmeter

Technical Field

The utility model relates to a precession vortex flowmeter especially relates to an automatic buffering plays spinner formula precession vortex flowmeter.

Background

The precession vortex flowmeter adopts advanced micro-processing technology, has the advantages of strong function, wide flow range, simple operation and maintenance, convenient installation and use and the like, and has main technical indexes reaching the advanced level of foreign similar products.

The working principle is as follows: the flow sensor has a flow profile resembling the profile of a venturi tube. A set of spiral guide vanes is arranged on the inlet side, and when fluid enters the flow sensor, the guide vanes force the fluid to generate violent swirling flow. When the fluid enters the diffusion section, the vortex flow starts to rotate for the second time under the action of backflow, and a gyro type vortex precession phenomenon is formed. The precession frequency is in direct proportion to the flow rate, and is not influenced by the physical properties and density of the fluid, and the detection element can obtain good linearity in a wider flow rate range by detecting the secondary rotation precession frequency of the fluid. The signal is amplified, filtered and shaped by a preamplifier to be converted into a pulse signal which is in direct proportion to the flow speed, then the pulse signal and detection signals of temperature, pressure and the like are sent to a microprocessor for integration processing, and finally, measurement results (instantaneous flow, accumulated flow, temperature and pressure data) are displayed on a liquid crystal display screen.

The existing flowmeter is found in use that the vortex generator is directly impacted by flow due to the fact that the existing flowmeter does not have a buffering structure, when the flow is large, the vortex generator is easily damaged, the measuring precision of the vortex generator is affected, meanwhile, later maintenance and replacement cause large economic cost, and an automatic buffering spinner type precession vortex flowmeter is designed according to the specific situation of the flow.

Disclosure of Invention

According to the above technical problem, the utility model provides an automatic buffering spinner type precession vortex flowmeter, including casing, bearing structure, divertor, sensor, turbine, bearing, buffer structure, the casing both ends are fluid inlet respectively, the fluid outlet, the position that is close to fluid inlet, fluid outlet in the casing is equipped with bearing structure respectively;

the turbine is rotationally connected with the supporting structures at the two ends through a bearing, and a sensor is arranged above the turbine;

a fluid director is arranged at one end of the interior of the shell, which is close to the fluid inlet, and a buffer structure is arranged on the fluid director; the buffer structure comprises a rotating shaft, a buffer plate, a first magnetic block, a second magnetic block and a travel switch, wherein the buffer plate is rotatably arranged on the fluid director through the rotating shaft, the first magnetic block is arranged at one end, away from the fluid inlet, of the buffer plate, the second magnetic block is arranged at the position, corresponding to the first magnetic block, on the fluid director, the travel switch is arranged on the fluid director, and the travel switch and the side wall of the buffer plate are located in the same vertical plane;

the travel switch and the second magnetic block are connected with a control system arranged in the flowmeter through leads.

Further, the sensor is a magnetoelectric proximity sensor.

Further, the buffer plate is of a V-shaped structure.

Furthermore, the second magnetic block is an electromagnet and is connected with an external power supply through a lead and a timer.

The utility model has the advantages that: the utility model relates to an automatic buffering spinner formula precession vortex flowmeter can cushion the regulation according to the flow size is automatic, through set up buffer structure between fluid inlet and turbine, avoids large-traffic direct high-speed impact vortex generator, avoids causing the condition of damage to vortex generator under this kind of condition, guarantees its measurement accuracy, has reduced later maintenance and change, has practiced thrift economic cost.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is an enlarged schematic view of the point A in the small flow state of the present invention;

fig. 3 is an enlarged schematic view of the large flow state point a of the present invention.

As shown in the figure: the device comprises a shell-1, a supporting structure-2, a flow guider-3, a sensor-4, a turbine-5, a bearing-6, a buffer structure-7, a rotating shaft-701, a buffer plate-702, a first magnetic block-703, a second magnetic block-704 and a travel switch-705.

Detailed Description

Example 1:

according to the technical problem, the utility model provides an automatic buffering spinner type precession vortex flowmeter, including casing 1, supporting structure 2, divertor 3, sensor 4, turbine 5, bearing 6, buffer structure 7, casing 1 both ends are the fluid inlet respectively, the fluid outlet, casing 1 inside is close to the fluid inlet, the position of fluid outlet is equipped with supporting structure 2 respectively;

the turbine 5 is rotatably connected with the supporting structures 2 at two ends through a bearing 6, and a sensor 4 is arranged above the turbine 5;

a fluid director 3 is arranged at one end of the interior of the shell 1 close to the fluid inlet, and a buffer structure 7 is arranged on the fluid director 3; the buffer structure 7 is composed of a rotating shaft 701, a buffer plate 702, a first magnetic block 703, a second magnetic block 704 and a travel switch 705, the buffer plate 702 is rotatably mounted on the fluid director 3 through the rotating shaft 701, the first magnetic block 703 is arranged at one end, far away from a fluid inlet, of the buffer plate 702, the second magnetic block 704 is arranged on the fluid director 3 at a position corresponding to the first magnetic block 703, the travel switch 705 is mounted on the fluid director 3, and the travel switch 705 and the side wall of the buffer plate 702 are located on the same vertical plane;

the travel switch 705 and the second magnetic block 704 are connected with a control system built in the flowmeter through conducting wires.

Further, the sensor 4 is a magnetoelectric proximity sensor 4.

Further, the buffer plate 702 has a V-shaped structure.

Further, the second magnetic block 704 is an electromagnet, and is connected to an external power source through a wire and a timer.

Example 2:

when fluid passes through the shell from a fluid inlet end, the fluid is firstly guided by the fluid guider 3, when the flow is small and the flow rate is low, the acting force on the buffer plate 702 is not enough to enable the buffer plate to shake to a larger extent, because the travel switch 705 is not triggered, the built-in control system has no signal feedback, the second magnetic block 704 is not electrified and then is not magnetically conducted, and the buffer plate 702 plays a smaller buffer role; when the flow is large and the flow rate is high, the acting force on the buffer plate 702 is enough to enable the buffer plate to shake to a large extent, the travel switch 705 is triggered, the built-in control system receives signal feedback, the second magnetic block 704 is electrified and magnetically conducted, the first magnetic block 703 is firmly attracted, the cross section of the buffer plate 702 on the vertical plane is in the maximum state, a large buffer effect is achieved, and the situation that large-flow fluid directly impacts the blades of the turbine 5 at a high speed is avoided; the fluid after the buffering action impacts the blades of the turbine 5 to generate a driving moment on the turbine 5, so that the turbine 5 overcomes the friction moment and the fluid resistance moment to generate rotation, and the rotation angular velocity of the turbine 5 is in direct proportion to the fluid flow velocity in a certain flow range, so that the fluid flow velocity can be obtained through the rotation angular velocity of the turbine 5, and the fluid flow passing through the pipeline can be calculated, wherein after the first magnetic block 703 and the second magnetic block 704 are attracted, the second magnetic block 704 is powered off at regular time under the action of a timer, if the buffer plate 702 naturally falls back under the action of gravity after power off and the travel switch 705 is not triggered for the second time, the control system controls the second magnetic block 704 to be in a long-term power off state until the travel switch 705 is triggered for the next time; if the travel switch 705 is triggered for the second time in the falling process of the buffer plate 702 after power failure, the second magnetic block 704 keeps powered on, the second magnetic block 704 is powered off at the timing of the timer, and whether the travel switch 705 is triggered or not is circularly checked.

The utility model discloses an add buffer structure 7 between fluid inlet and turbine 5, can cushion automatically according to the flow size and adjust, avoid large-traffic direct high-speed impact vortex generator, avoid causing the condition of damage to vortex generator under this kind of condition, guarantee its measuring accuracy, reduce later maintenance and change, practiced thrift economic cost.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An automatic buffer spinner type precession vortex flowmeter is characterized by comprising a shell, a supporting structure, a fluid director, a sensor, a turbine, a bearing and a buffer structure, wherein two ends of the shell are respectively provided with a fluid inlet and a fluid outlet, and the positions, close to the fluid inlet and the fluid outlet, in the shell are respectively provided with the supporting structure;

2. The automatic buffer spinner precession vortex flowmeter of claim 1 wherein the sensor is a magneto-electric proximity sensor.

3. The automatic damping spinner precession vortex flowmeter of claim 1 wherein the damping plate is of V-shaped configuration.

4. The automatic buffering spinner-type precession vortex flowmeter of claim 1, wherein the second magnet is an electromagnet connected to an external power source through a wire and a timer.