A vortex flowmeter

Abstract

This invention relates to a vortex flow meter, comprising a tube body, a vortex generator and a sensor installed within the tube body; it also includes a hollow connector, through which the vortex generator is connected to the tube body, and the side wall of the connector has several outflow holes; the tube body comprises a first flow channel, a pure water pipe equipped with a valve, and a receiving tank, one end of which is connected to a pure water supply device, and the other end is connected to one end of the first flow channel, the other end of which is connected to the inner cavity of the connector; the vortex generator is located within the receiving tank, and a gap is left between the side of the vortex generator and the side wall of the receiving tank to form an overflow channel, with the outflow holes communicating with the gap. When the vortex flow meter is in a brief idle state, residual impurities can be cleaned without disassembling the vortex generator, avoiding the accumulation of impurities that could affect the accuracy of the detection due to prolonged use.

Description

Technical Field

[0001] This invention relates to the field of vortex flow meters, and more specifically, to a vortex flow meter. Background Technology

[0002] Vortex flow meters, widely used in industrial fluid measurement, operate on the principle that fluid flowing over a non-streamlined vortex generator produces regular vortex shedding on either side. By measuring the frequency of these vortices, the fluid velocity can be indirectly obtained, allowing for the calculation of the cumulative flow rate. This measurement method, due to its simple structure, wide rangeability, and low pressure loss, has found widespread application in the petroleum, chemical, power, and urban gas industries.

[0003] In actual operating conditions, vortex flow meters often operate continuously for extended periods, and the measured medium typically contains varying degrees of impurities, such as solid particles, oil, fibrous materials, or crystalline precipitates. Over time, these impurities gradually settle or chemically adhere to the surface of the vortex generator and the sensor probe, forming a coating layer. This contamination has two significant impacts: firstly, it alters the geometry and surface characteristics of the vortex generator, causing a shift in the boundary layer separation point during fluid flow, disrupting the original vortex generation pattern, and reducing the stability and intensity of the vortex signal; secondly, impurity deposition on the sensor surface hinders the effective transmission of vibration or stress to the sensing element, reducing the sensor's response sensitivity and signal-to-noise ratio. The combined effect of these two factors results in flow meter output signal drift, measurement accuracy gradually deviating from the initial calibration value, and ultimately leading to significant deviations in measurement results, affecting the accuracy of trade settlements or production process control.

[0004] Although there are some existing technologies for improving the prevention and cleaning of flow meters, most of them focus on periodic manual cleaning or using simple mechanical scraping structures. They are difficult to achieve long-term effective self-cleaning without interrupting production or disassembly. There is still a lack of systematic solutions for the performance degradation of eddy current generators and sensors caused by contamination. Summary of the Invention

[0005] To overcome the problem of impurity deposition affecting the vortex generator in the prior art, the present invention provides a vortex flow meter that can clean impurities on the surface of the vortex generator without disassembling the flow meter.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a vortex flow meter, including a tube body, a vortex generator and a sensor installed in the tube body; it also includes a hollow connector, the vortex generator being connected to the tube body through the connector, and the side wall of the connector having a plurality of outflow holes; the tube body is provided with a first flow channel, a pure water pipe equipped with a valve and a receiving tank, one end of the pure water pipe being used to connect to a pure water supply device, and the other end being connected to one end of the first flow channel, the other end of the first flow channel being connected to the inner cavity of the connector; the vortex generator is located in the receiving tank and a gap is left between the side of the vortex generator and the side wall of the receiving tank to form an overflow channel, and the outflow holes are connected to the gap.

[0007] In the above technical solution, when the vortex flow meter is idle, if the flow rate inside the pipe is detected to be zero or the valve of the upstream pipe is closed, the valve of the pure water pipe can be opened. Pure water enters the first flow channel along the pure water pipe and enters the hollow inner cavity of the connector. It then flows out through the outlet hole and into the overflow channel. Since the overflow channel is formed by the gap between the side of the vortex generator and the side of the inner wall of the receiving tank, the flow area is small, which makes the pure water flow out quickly through the gap and along the surface of the vortex generator, thereby cleaning the surface of the vortex generator. Because the vortex flow meter starts cleaning every time it is idle, impurities have not yet settled on the surface of the vortex generator. The pure water flow can effectively wash away the impurities, allowing the vortex generator to be used for a long time without disassembly and maintenance.

[0008] Furthermore, a gap is left between the vortex generator and the inner top surface of the receiving tank to form a flow channel. The outlet hole is connected to the flow channel, and the other end of the flow channel is connected to the overflow channel. Pure water flows out from the outlet hole and enters the overflow channel along the flow channel. The flow channel is formed by the gap between the vortex generator and the top surface of the receiving tank. The size of this gap can be adjusted by adjusting the vortex generator, thereby adjusting the flow rate of pure water in the flow channel. At the same time, the flow channel can directly connect to each side of the vortex generator. Pure water can flow from the flow channel to the overflow channel along the top surface of the vortex generator, allowing pure water to overflow from the top surface of the vortex generator to each side of the vortex generator, cleaning the surface of the vortex generator.

[0009] Furthermore, the top of the vortex generator is also provided with a guide channel, one end of which is connected to the outlet hole and the other end of which is connected to the overflow channel. The number of guide channels is the same as the number of sides of the vortex generator, and the number of outlets is the same as the number of guide channels, with a one-to-one correspondence. The inner diameter of the guide channel gradually decreases from the end connected to the outlet hole to the end connected to the overflow channel. The vortex generator generally has multiple sides, and if it is a triangular prism, it will have three. The guide channels corresponding to the sides are provided on the top of the vortex generator. During installation, the top surface of the vortex generator can be made to abut against the top surface of the receiving tank. The pure water from the outlet hole flows along its respective guide channel to its respective side and overflows from the overflow channel, then flows downward along the side of the vortex generator to clean it. The gradually decreasing inner diameter of the guide channel can gradually increase the flow rate of the pure water, ensuring that the pure water diffuses at the connection between the guide channel and the overflow channel, filling the entire overflow channel and having a large flow rate.

[0010] Furthermore, the width of the overflow channel is smaller than the width of the drainage channel; the width of the drainage channel is less than or equal to the diameter of the outflow hole. By gradually reducing the width of the channel, the flow rate of pure water is increased, resulting in a better rinsing effect. This allows the pure water flowing from the drainage channel to the overflow channel to diffuse, filling the entire overflow channel and enabling the pure water to flow downwards along the entire side of the vortex generator, ensuring that the entire side of the vortex generator is cleaned.

[0011] Furthermore, the inner wall of the receiving tank is inclined, and the end of the inclined surface is inclined towards the direction of the vortex generator. That is, the axis of the overflow channel intersects with the axis of the vortex generator. Except for the part of pure water that flows along the top surface of the vortex generator to the side surface of the vortex generator, the rest of the pure water will flow along the inclined surface to the side surface of the vortex generator, thereby increasing the impact force of the pure water on the vortex generator and improving the cleaning effect.

[0012] Furthermore, the inner wall of the pipe body is provided with protrusions around the receiving groove. These protrusions have spray channels, the axis of which forms an angle with the axis of the vortex generator, and the outlet of the spray channels faces the vortex generator. The pipe body is provided with a transition channel, one end of which connects to the guide channel, and the other end connects to the spray channel. By increasing the pure water supply to the first flow channel, excess pure water can enter the transition channel from the guide channel and then be sprayed out from the spray channel. Since the overflow channel flows downwards from the top surface of the vortex generator, the rinsing capacity decreases after flowing a certain distance due to reduced water pressure. The spray channel is designed so that when pure water is sprayed out, it can directly clean the lower and middle parts of the vortex generator, allowing more surface area on the sides of the vortex generator to withstand higher water pressure.

[0013] Furthermore, the protrusion is detachably connected to the pipe body; the outer wall of the protrusion is threaded or snapped into the inner wall of the transition channel; the protrusion can be disassembled and assembled as needed, reducing the processing difficulty of the pipe body. The axis of the jet channel intersects the axis of the vortex generator in the middle section of the vortex generator. The middle section refers to the area near the center point of the vortex generator. After pure water is sprayed out from the jet channel, it flows towards the middle section of the vortex generator, and then flows downward from the middle section, allowing the lower middle part of the side of the vortex generator to also receive greater water pressure cleaning, thus improving the cleaning effect.

[0014] Furthermore, it also includes a mounting base on which the sensor is fixed; the mounting base is mounted on the pipe body; the mounting base is provided with an inlet and an annular cleaning channel at its bottom where the sensor is located, one end of the inlet is connected to the annular cleaning channel, and the other end is connected to a pure water pipe through a second channel. The sensor is connected to the pipe body via the mounting base. During eddy current cleaning, pure water enters the annular cleaning channel through the second channel and the inlet, and flows out of the annular cleaning channel to the surface of the sensor, thereby cleaning the sensor.

[0015] Furthermore, the inner diameter of the annular cleaning channel is smaller than the inner diameter of the inlet. The larger inner diameter of the inlet allows pure water to fill the annular cleaning channel more quickly, enabling pure water to flow from all parts of the annular cleaning channel to the surface of the sensor, thereby cleaning each surface of the sensor.

[0016] Furthermore, the pure water pipe is located between the sensor and the eddy current generator. The first flow channel and the second flow channel are located on both sides of the pure water pipe, respectively, allowing pure water to flow directly into the first and second flow channels, thus simplifying the flow channel arrangement of the pipe body.

[0017] Furthermore, it also includes a water pump, with the inlet end of the pure water pipe connected to the water pump. The water pump can increase the water pressure of the pure water, allowing the pure water to flow faster and apply greater pressure during pure water rinsing, thereby improving the effect of the pure water in removing impurities.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. When the vortex flow meter is in a brief idle state, residual impurities can be cleaned without disassembling the vortex generator and / or sensor, avoiding the accumulation of impurities due to prolonged use and thus affecting the accuracy of the detection.

[0019] 2. The first flow channel, second flow channel, annular cleaning flow channel, and overflow channel are all located at the top of the pipe body, so the flow meter of the fluid being measured will not be affected. Impurities in the fluid being measured will not cause blockage of the annular cleaning flow channel and overflow channel, etc.

[0020] 3. Both the connectors and mounting bases can be separated from the tube body. The tube body itself only needs to be machined for the first flow channel, the second flow channel, and the receiving groove, reducing the machining difficulty of the tube body. The connectors and mounting bases can be machined separately and then installed, which also reduces the machining difficulty of the connectors and mounting bases. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a vortex flow meter according to the present invention; Figure 2 yes Figure 1 A magnified view of a portion of position A; Figure 3 This is a schematic diagram of the structure of the vortex generator in Embodiment 2 of the vortex flowmeter of the present invention; Figure 4 This is a schematic diagram of the protrusion in Embodiment 3 of the vortex flowmeter of the present invention; Figure 5 This is a schematic diagram of the structure of embodiment 4 of the vortex flow meter of the present invention; Figure 6 yes Figure 5 A magnified view of position B.

[0022] In the diagram, 100 – pipe body; 110 – first flow channel; 120 – pure water pipe; 130 – receiving tank; 140 – transfer channel; 150 – second flow channel; 200 – vortex generator; 300 – sensor; 400 – connector; 410 – outlet hole; 500 – overflow channel; 600 – guide channel; 700 – protrusion; 710 – jet channel; 800 – mounting base; 810 – inlet; 820 – annular cleaning channel. Detailed Implementation

[0023] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0024] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0025] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1 like Figure 1-2 The illustration shows an embodiment 1 of a vortex flow meter, comprising a tube body 100, a vortex generator 200 installed within the tube body 100, and a sensor 300; it also includes a hollow connector 400, through which the vortex generator 200 is connected to the tube body 100, and the side wall of the connector 400 is provided with a plurality of outflow holes 410; the tube body 100 is provided with a first flow channel 110, a pure water pipe 120 equipped with a valve, and a receiving tank 130, one end of the pure water pipe 120 being used to connect to a pure water supply device, and the other end being connected to one end of the first flow channel 110, the other end of the first flow channel 110 being connected to the inner cavity of the connector 400; the vortex generator 200 is located within the receiving tank 130, and a gap is left between the side of the vortex generator 200 and the side wall of the receiving tank 130 to form an overflow channel 500, and the outflow holes 410 are connected to the gap.

[0026] In this embodiment, a gap is left between the vortex generator 200 and the inner top surface of the receiving tank 130 to form a drainage channel 600. The outlet hole 410 is connected to the drainage channel 600, and the other end of the drainage channel 600 is connected to the overflow channel 500. Pure water flows out from the outlet hole 410 and enters the overflow channel 500 along the drainage channel 600. The drainage channel 600 is formed by the gap between the vortex generator 200 and the top surface of the receiving tank 130. The size of this gap can be adjusted by adjusting the vortex generator 200, thereby adjusting the flow rate of pure water in the drainage channel 600. At the same time, the drainage channel 600 can directly connect to each side of the vortex generator 200. Pure water can flow from the drainage channel 600 to the overflow channel 500 along the top surface of the vortex generator 200, so that pure water can overflow from the top surface of the vortex generator 200 to each side of the vortex generator 200, cleaning the surface of the vortex generator 200.

[0027] Specifically, the width of the overflow channel 500 is smaller than the width of the drainage channel 600; the width of the drainage channel 600 is less than or equal to the diameter of the outlet hole 410. By gradually reducing the width of the channels, the flow rate of pure water is increased, resulting in better rinsing. This allows the pure water flowing from the drainage channel 600 to the overflow channel 500 to diffuse, ensuring that the pure water covers the entire overflow channel 500. Consequently, the pure water can flow downwards along the entire side of the vortex generator 200, ensuring that the entire side of the vortex generator 200 is cleaned.

[0028] The inner wall of the receiving tank 130 is inclined, and the end of the inclined surface is inclined towards the direction of the vortex generator 200. That is, the axis of the overflow channel 500 intersects with the axis of the vortex generator 200. Except for the part of pure water that flows along the top surface of the vortex generator 200 to the side surface of the vortex generator 200, the rest of the pure water will flow along the inclined surface to the side surface of the vortex generator 200, thereby increasing the impact force of the pure water on the vortex generator 200 and improving the cleaning effect.

[0029] In this embodiment, the shape of the receiving groove 130 is a conformal design corresponding to the vortex generator 200, and it is consistent with the contour of the vortex generator 200. One end of the connector 400 is fixedly connected to the vortex generator 200, and the other end is inserted into the first flow channel 110 and fixed by fasteners. In this embodiment, one end of the connector 400 is provided with threads, and the connector 400 is locked by inserting a nut into the first flow channel 110. The process hole formed by the first flow channel 110 can be sealed by a plugging component.

[0030] In this embodiment, a water pump is also included, with the inlet end of the pure water pipe 120 connected to the water pump. The water pump can increase the water pressure of the pure water, allowing the pure water to flow faster and to carry greater pressure during pure water rinsing, thereby improving the effect of the pure water in removing impurities.

[0031] The working principle or workflow of this embodiment is as follows: When the vortex flowmeter is idle, if the flow rate in the pipe body 100 is detected to be zero or the valve of the upstream pipe is closed, the valve of the pure water pipe 120 can be opened. The valve can be equipped with a solenoid valve, which is controlled to open and close by sensing an electrical signal. When the vortex flowmeter is detected to be idle, cleaning can be performed immediately. Pure water enters the first flow channel 110 along the pure water pipe 120 and enters the hollow inner cavity of the connector 400. Then it flows out through the outlet hole 410 and enters the overflow channel 500. Since the overflow channel 500 is formed by the gap between the side of the vortex generator 200 and the inner wall of the receiving tank 130, the flow area is small, which makes the pure water flow out quickly through the gap and along the surface of the vortex generator 200, thereby cleaning the surface of the vortex generator 200. Since the vortex flow meter starts cleaning every time it is idle, impurities have not yet settled on the surface of the vortex generator 200. Because the pure water flow can effectively wash away the impurities, the vortex generator 200 can be used for a long time without disassembly and maintenance.

[0032] The beneficial effects of this embodiment are as follows: When the vortex flowmeter is in a brief idle state, residual impurities can be cleaned without disassembling the vortex generator 200, avoiding the accumulation of impurities that could affect the detection accuracy due to prolonged use. Both the first flow channel 110 and the overflow channel 500 are located at the top of the tube body 100, so the fluid being measured will not be affected when passing through the vortex flowmeter. Impurities in the fluid being measured will not cause blockage of the overflow channel 500. The connector 400 can be separated from the tube body 100, reducing the processing difficulty of the tube body 100.

[0033] Example 2 A second embodiment of a vortex flow meter differs from the first embodiment in that the arrangement of the flow channel 600 is different.

[0034] like Figure 3As shown, the top of the vortex generator 200 is also provided with a guide channel 600. One end of the guide channel 600 is connected to the outlet hole 410, and the other end is connected to the overflow channel 500. The number of guide channels 600 is the same as the number of sides of the vortex generator 200, and the number of outlets is the same as the number of guide channels 600, and they correspond one-to-one. The inner diameter of the guide channel 600 gradually decreases from the end connected to the outlet hole 410 to the end connected to the overflow channel 500. The vortex generator 200 generally has multiple sides, and if it is a triangular prism, it will have three sides. A flow channel 600 corresponding to the side is provided on the top of the vortex generator 200. During installation, the top surface of the vortex generator 200 can be made to abut against the top surface of the receiving tank 130. Pure water from the outlet hole 410 flows along its respective flow channel 600 to its respective side and overflows from the overflow channel 500, then flows downward along the side of the vortex generator 200 to clean it. The gradually decreasing inner diameter of the flow channel 600 can gradually increase the flow rate of the pure water, ensuring that the pure water diffuses at the connection between the flow channel 600 and the overflow channel 500, filling the entire overflow channel 500 and having a large flow rate.

[0035] Compared to Embodiment 1, in this embodiment, the vortex generator 200 abuts against the inner top surface of the receiving tank 130, allowing pure water to flow through the guide channel 600 to the overflow channel 500 without needing to consider the gap between the vortex generator 200 and the inner top surface of the receiving tank 130, making the installation of the vortex generator 200 more convenient. Simultaneously, since the guide channel 600 is located on the top surface of the vortex generator 200, pure water can flow better along the vortex generator 200, thus overflowing to the side of the vortex generator 200.

[0036] The remaining features and working principles of this embodiment are the same as those of Embodiment 1.

[0037] Example 3 A third embodiment of a vortex flow meter, based on embodiment 1 or embodiment 2, differs from embodiment 1 in that, as follows: Figure 4As shown, the inner wall surface of the tube body 100 is provided with a protrusion 700 around the receiving groove 130. The protrusion 700 is provided with a jet channel 710. The axis of the jet channel 710 forms an angle with the axis of the vortex generator 200 and the outlet of the jet channel 710 faces the vortex generator 200. The tube body 100 is provided with a transition channel 140. One end of the transition channel 140 is connected to the guide channel 600 and the other end is connected to the jet channel 710. By increasing the pure water supply in the first flow channel 110, excess pure water can enter the transfer channel 140 from the diversion channel 600 and then be sprayed out from the spray channel 710. Since the overflow channel 500 flows downward from the top surface of the vortex generator 200, the rinsing capacity will decrease due to the reduced water pressure after flowing a certain distance. Therefore, the spray channel is set up so that when pure water is sprayed out from the spray channel 710, it can directly clean the middle and lower part of the vortex generator 200, allowing the side of the vortex generator 200 to have more area to accept the cleaning of higher water pressure.

[0038] In this embodiment, the protrusion 700 is detachably connected to the tube body 100; the outer wall of the protrusion 700 is threaded or snapped into the inner wall of the transition channel 140; the protrusion 700 can be disassembled and assembled as needed, reducing the processing difficulty of the tube body 100. The axis of the jet channel 710 intersects the axis of the vortex generator 200 in the middle section region of the vortex generator 200. The middle section region refers to the area near the center point of the vortex generator 200. After pure water is sprayed out from the jet channel 710, it flows to the middle section region of the vortex generator 200, and then flows downward from the middle section region, so that the lower middle part of the side of the vortex generator 200 can also receive a large water pressure for cleaning, thereby improving the cleaning effect.

[0039] The remaining features and working principles of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

[0040] Example 4 An embodiment 4 of a vortex flow meter, based on any of the above embodiments, differs from any of the above embodiments in that, as follows: Figure 5-6 As shown, it also includes a mounting base 800, on which the sensor 300 is fixed. The mounting base 800 is mounted on the pipe body 100 and is detachably connected to the pipe body 100, which can be a threaded connection. The mounting base 800 is provided with an inlet 810 and an annular cleaning channel 820 at the bottom where the sensor 300 is located. One end of the inlet 810 is connected to the annular cleaning channel 820, and the other end is connected to the pure water pipe 120 through a second channel 150. The sensor is connected to the pipe body 100 through the mounting base 800. During the cleaning of the eddy current generator 200, pure water enters the annular cleaning channel 820 through the second channel 150 and the inlet 810. After flowing out of the annular cleaning channel 820, the pure water flows to the surface of the sensor 300, thereby cleaning the sensor 300.

[0041] In this embodiment, the inner diameter of the annular cleaning channel 820 is smaller than the inner diameter of the inlet 810. The larger inner diameter of the inlet 810 allows pure water to fill the annular cleaning channel 820 more quickly, enabling pure water to flow from all parts of the annular cleaning channel 820 to the surface of the sensor 300, thereby cleaning each surface of the sensor 300.

[0042] In addition, the pure water pipe 120 is located between the sensor 300 and the eddy current generator 200. The first flow channel 110 and the second flow channel are located on both sides of the pure water pipe 120, and the pure water in the pure water pipe 120 can flow directly to the first flow channel 110 and the second flow channel, simplifying the flow channel arrangement of the pipe body 100.

[0043] The working principle of this embodiment is as follows: When the vortex flowmeter is idle, if the flow rate in the pipe body 100 is detected to be zero or the valve of the upstream pipe is closed, the valve of the pure water pipe 120 can be opened. Pure water can then be used to simultaneously clean the vortex generator 200 and the sensor 300. The cleaning principle of the vortex generator 200 is described in Embodiment 1. For cleaning the sensor 300, pure water enters the annular cleaning channel 820 through the second flow channel and the inlet 810. After flowing out of the annular cleaning channel 820, the pure water flows onto the surface of the sensor 300, thereby cleaning the sensor 300.

[0044] The beneficial effects of this embodiment are: 1. When the vortex flow meter is in a short-term idle state, the residual impurities can be cleaned without disassembling the vortex generator 200 and the sensor 300, thus avoiding the accumulation of impurities due to long-term use and affecting the accuracy of detection.

[0045] 2. The first flow channel 110, the second flow channel, the annular cleaning flow channel 820, and the overflow channel 500 are all located at the top of the pipe body 100, so the flow meter of the fluid being measured will not be affected. Impurities in the fluid being measured will not cause blockage of the annular cleaning flow channel 820 and the overflow channel 500.

[0046] 3. Both the connector 400 and the mounting base 800 can be separated from the tube body 100. The tube body 100 itself only needs to be machined with the first flow channel 110, the second flow channel, and the receiving groove 130, reducing the machining difficulty of the tube body 100. The connector 400 and the mounting base 800 can be machined separately and then installed, which also reduces the machining difficulty of the connector 400 and the mounting base 800.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A vortex flow meter, comprising a tube body (100), an vortex generator (200) installed within the tube body (100), and a sensor (300), characterized in that, It also includes a hollow connector (400), the vortex generator (200) is connected to the pipe body (100) through the connector (400), and the side wall of the connector (400) is provided with a plurality of outflow holes (410); the pipe body (100) is provided with a first flow channel (110), a pure water pipe (120) equipped with a valve and a receiving tank (130), one end of the pure water pipe (120) is used to connect to a pure water supply device, and the other end is connected to one end of the first flow channel (110), and the other end of the first flow channel (110) is connected to the inner cavity of the connector (400); the vortex generator (200) is located in the receiving tank (130) and a gap is left between the side of the vortex generator (200) and the side wall of the receiving tank (130) to form an overflow channel (500), and the outflow holes (410) are connected to the overflow channel (500).

2. The vortex flow meter according to claim 1, characterized in that, The vortex generator (200) and the inner top surface of the receiving tank (130) are spaced apart to form a flow channel (600), the outflow hole (410) is connected to the flow channel (600), and the other end of the flow channel (600) is connected to the overflow channel (500).

3. The vortex flow meter according to claim 1, characterized in that, The top of the vortex generator (200) is also provided with a flow channel (600), one end of which is connected to the outflow hole (410) and the other end is connected to the overflow channel (500).

4. The vortex flow meter according to claim 3, characterized in that, The number of the drainage channels (600) is the same as the number of the sides of the vortex generator (200), and the number of the outflow holes is the same as the number of the drainage channels (600) and corresponds one-to-one; the inner diameter of the drainage channel (600) gradually decreases from the end connected to the outflow hole (410) to the end connected to the overflow channel (500).

5. The vortex flow meter according to claim 2 or 3, characterized in that, The width of the overflow channel (500) is less than the width of the drainage channel (600); the width of the drainage channel (600) is less than or equal to the diameter of the outflow hole (410).

6. The vortex flow meter according to claim 2 or 3, characterized in that, The inner wall of the receiving groove (130) is inclined, and the end of the inclined surface is inclined in the direction of the vortex generator (200).

7. The vortex flow meter according to claim 2 or 3, characterized in that, The inner wall of the tube body (100) is provided with a protrusion (700) around the receiving groove (130). The protrusion (700) is provided with a jet channel (710). The axis of the jet channel (710) forms an angle with the axis of the vortex generator (200), and the outlet of the jet channel (710) faces the vortex generator (200). The tube body (100) is provided with a transition channel (140). One end of the transition channel (140) is connected to the guide channel (600), and the other end is connected to the jet channel (710).

8. The vortex flow meter according to claim 7, characterized in that, The protrusion (700) is detachably connected to the tube body (100); the outer wall of the protrusion (700) is threadedly connected to the inner wall of the transition channel (140); the axis of the jet channel (710) intersects the axis of the vortex generator (200) in the middle section region of the vortex generator (200).

9. The vortex flow meter according to any one of claims 1-3, characterized in that, It also includes a mounting base (800), on which the sensor (300) is fixed; the mounting base (800) is mounted on the pipe body (100); the mounting base (800) is provided with an inlet (810) and an annular cleaning channel (820) at the bottom end where the sensor (300) is located, one end of the inlet (810) is connected to the annular cleaning channel (820), and the other end is connected to the pure water pipe (120) through a second channel (150).

10. The vortex flow meter according to claim 9, characterized in that, The inner diameter of the annular cleaning channel (820) is smaller than the inner diameter of the inlet (810).

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