阅读说明：本技术 一种流速探测器及其使用方法 (Flow velocity detector and application method thereof ) 是由 不公告发明人 于 2020-05-20 设计创作，主要内容包括：本发明提供了一种流速探测器及其使用方法,流体改变两磁铁间的相对位置,改变流速探测器外的磁场；通过探测流体内磁铁产生的磁场,确定流体的流速。一方面,因为磁场与物质的相互作用弱,测量结果受外界环境的影响小,所以测量的准确度和灵敏度高。另一方面,本发明中,信息传递路径简单,可靠性高。此外,本发明中只有磁铁和弹性部件等器件,没有复杂的电子或光学元件,结构简单。(The invention provides a flow velocity detector and a using method thereof.A fluid changes the relative position between two magnets and changes a magnetic field outside the flow velocity detector; the flow rate of the fluid is determined by detecting the magnetic field generated by the magnets in the fluid. On one hand, because the interaction between the magnetic field and the substance is weak, the measurement result is less influenced by the external environment, and therefore the measurement accuracy and sensitivity are high. On the other hand, the invention has simple information transmission path and high reliability. In addition, the invention only has devices such as a magnet, an elastic component and the like, does not have complicated electronic or optical elements and has simple structure.)

1. A flow velocity detector is characterized by comprising a wall, a first magnet, a second magnet, an elastic component, a hole and a stress part, wherein the first magnet is fixed on the wall, the second magnet is fixedly connected with the elastic component, the elastic component is fixedly connected on the wall, the hole is arranged on the wall, and the stress part penetrates through the hole and is fixedly connected with the second magnet;

when the flow velocity is measured, the fluid acts on the force-bearing part, so that the relative position between the first magnet and the second magnet is changed, the magnetic field outside the wall of the container is changed, and the flow velocity of the fluid is detected by detecting the magnetic field outside the wall of the container.

2. The flow rate probe of claim 1, wherein: the first magnet is fixed on the upper part in the wall, and the second magnet is limited on the lower part of the wall through a guide rail.

3. The flow rate probe of claim 2, wherein: the middle part of first magnet is equipped with the recess, second magnet size is less than the recess of first magnet.

4. A flow rate probe according to any one of claims 1 to 3, wherein: the first magnet and the second magnet are arranged in a manner that opposite magnetic poles are opposite to each other.

5. The flow rate probe of claim 4, wherein: the elastic component is a spring.

6. Use of a flow rate probe according to any of claims 1 to 5, wherein: the method comprises the following steps:

firstly, placing the flow velocity detector in fluid, wherein the flow velocity detector excites a magnetic field outside the fluid;

secondly, fixing diamond particles in the fluid, wherein the diamond particles all contain nitrogen-vacancy color centers, irradiating the diamond particles by using excitation light with a preset wavelength, applying sweep frequency microwaves with a preset frequency range to the diamond particles by using a microwave guide wire, collecting fluorescence emitted by the nitrogen-vacancy color centers in the diamond particles through excitation, and determining a magnetic field at the position by analyzing the relation between fluorescence intensity and microwave frequency;

thirdly, measuring the relative position between the measured magnetic field and the flow velocity detector;

and fourthly, determining the flow velocity by analyzing the relative position relationship between the magnetic field and the point of the measuring magnetic field and the flow velocity detector.

Technical Field

The invention relates to the field of flow velocity detection, in particular to a flow velocity detector and a using method thereof.

Background

The flow rate refers to the distance that the fluid travels per unit time. Flow rate measurements are of great importance in engineering practice and in the knowledge of nature. In the prior art, the sensitivity and the accuracy for detecting the flow velocity of fluid in a pipeline deeply buried underground or the flow velocity of seawater in deep sea are low, and devices are complex.

Disclosure of Invention

To solve the above problems, the present invention provides a flow rate detector and a method for using the same.

The flow velocity detector comprises a wall, a first magnet, a second magnet, an elastic component, a hole and a stress part, wherein the first magnet is fixed on the wall, the second magnet is fixedly connected with the elastic component, the elastic component is fixedly connected on the wall, the wall is provided with the hole, and the stress part penetrates through the hole and is fixedly connected with the second magnet. When the flow velocity is measured, the fluid acts on the force-bearing part, so that the relative position between the first magnet and the second magnet is changed, the magnetic field outside the wall of the device is changed, and the flow velocity of the fluid is detected by detecting the magnetic field outside the wall of the device.

Further, the first magnet is fixed to an upper portion inside the wall, and the second magnet is restricted to a lower portion of the wall by the guide rail.

Furthermore, a groove is formed in the middle of the first magnet, and the size of the second magnet is smaller than that of the first magnet, so that the second magnetic field can enter the groove of the first magnetic field after the second magnet is stressed.

Further, the first magnet and the second magnet are arranged with opposite magnetic poles.

Further, the elastic member is a spring.

The use method of the flow velocity detector comprises the following steps:

firstly, placing the flow velocity detector in fluid, wherein the flow velocity detector excites a magnetic field outside the fluid; the magnetic field outside the flow rate probe will change compared to when not placed in the fluid;

secondly, fixing diamond particles in the fluid, wherein the diamond particles all contain nitrogen-vacancy color centers, irradiating the diamond particles by using excitation light with a preset wavelength, applying sweep frequency microwaves with a preset frequency range to the diamond particles by using a microwave guide wire, collecting fluorescence emitted by the nitrogen-vacancy color centers in the diamond particles through excitation, and determining a magnetic field at the position by analyzing the relation between fluorescence intensity and microwave frequency;

thirdly, measuring the relative position between the measured magnetic field and the flow velocity detector;

and fourthly, determining the flow velocity by analyzing the relative position relationship between the magnetic field and the point of the measuring magnetic field and the flow velocity detector.

The invention has the beneficial effects that: the invention provides a flow velocity detector and a using method thereof.A fluid changes the relative position between two magnets and changes a magnetic field outside the flow velocity detector; the flow rate of the fluid is determined by detecting the magnetic field generated by the magnets in the fluid. On one hand, because the interaction between the magnetic field and the substance is weak, when the flow velocity of fluid in deep sea or deep buried pipeline is detected, the action between the magnetic field generated by the magnet and the sea or soil is weak, the influence of the external environment on the measurement result is small, and the measurement accuracy and sensitivity are high. On the other hand, the magnetic field is generated by the magnetic field in the fluid, and the information propagation path is a one-way path from the inside of the fluid to the outside of the fluid. In the prior detection technology, a signal needs to be generated outside a fluid, the signal needs to be transmitted to a sensitive element in the fluid, the signal is transmitted outside the fluid after the sensitive element changes the signal, and the information transmission is a two-way path. Therefore, the invention has simple information transmission path and high reliability. In addition, the invention only has devices such as a magnet, an elastic component and the like, does not have complicated electronic or optical elements and has simple structure.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a flow rate probe.

Fig. 2 is a schematic diagram showing a positional relationship between the first magnet and the second magnet.

In the figure: 1. a vessel wall; 2. a first magnet; 3. a second magnet; 4. an elastic member; 5. a hole; 6. a force-bearing portion.

Detailed Description

To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.