Flow valve

Abstract

The utility model provides a flow valve which comprises a valve body and a flow detection device, the valve body sequentially comprises an inlet section and a valve main body in the flow direction of detected fluid, and the inlet section is provided with a hole channel communicated with the valve main body; the flow detection device is arranged at the inlet section, one part of the flow detection device extends into the hole channel of the inlet section so as to be in contact with the detected fluid flowing through the inlet section, and the hole diameters of the hole channels at any position of the inlet section are the same. According to the utility model, the flowmeter is combined with the valve, so that the problem caused by the fact that the flowmeter needs to be mounted by opening a hole independently is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flow meters, and in particular relates to a flow valve. Background Art

[0002] A valve is a common pipeline accessory used to open and close pipelines, control flow direction and control the parameters of the conveying medium. As an essential accessory in the conveying pipeline, the valve is usually connected to the pipeline by flange. In general, the installation of the flow meter is to open a hole in the pipeline and place the flow meter in the pipeline to complete the detection of the fluid flow. However, opening the pipeline will destroy the integrity of the pipeline, increase the risk of leakage on the pipeline, increase the maintenance and inspection points, and increase the workload of the maintenance personnel. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a flow valve, which combines a flow meter with a valve, thereby solving the problem that the flow meter needs to be installed by opening a hole separately.

[0004] In order to solve or improve at least one of the above technical problems to a certain extent, according to one embodiment of the utility model, a flow valve is provided, comprising: a valve body and a flow detection device, along the flow direction of the measured fluid, the valve body sequentially comprises an inlet section and a valve body, the inlet section has a channel connected to the valve body;

[0005] The flow detection device is arranged at the inlet section, and a part of the flow detection device extends into the channel of the inlet section to contact the measured fluid flowing through the inlet section. The aperture of the channel at any position of the inlet section is the same.

[0006] In some embodiments, the flow detection device includes a data acquisition unit and a data processing unit;

[0007] The data acquisition unit is electrically connected to the data processing unit, and at least a portion of the data acquisition unit extends into the channel of the inlet section to generate sensing data through the measured fluid;

[0008] The data processing unit calculates the flow rate and / or flow velocity of the measured fluid according to the sensing data.

[0009] In some embodiments, the data acquisition unit includes a pressure-taking element and a pressure-sensing element;

[0010] Wherein, the pressure-taking element is connected to the pressure-sensitive element, and the pressure-sensitive element is connected to the data processing unit;

[0011] The pressure-taking element extends into the channel of the inlet section to transport the measured fluid to the pressure-sensitive element. The pressure-sensitive element detects the pressure difference of the measured fluid transported by the pressure-taking element. The data processing unit calculates the flow rate and / or flow velocity of the measured fluid based on the pressure difference detected by the pressure-sensitive element.

[0012] In some embodiments, the pressure taking element includes a pressure taking head and a flow guide rod, the pressure taking head is provided with two through holes, the flow guide rod is provided with two flow guide holes, and the two through holes are respectively connected to the two flow guide holes;

[0013] Along the flow direction of the measured fluid, the pressure head includes a first pressure taking surface and a second pressure taking surface which are arranged opposite to each other, and the two through holes are respectively connected to the first pressure taking surface and the second pressure taking surface.

[0014] In some embodiments, a first angle is formed between the first pressure taking surface and the flow direction of the measured fluid, a second angle is formed between the second pressure taking surface and the flow direction of the measured fluid, and the first angle and the second angle are less than or equal to 90 degrees.

[0015] In some embodiments, the first angle and the second angle are less than 90°, and the first angle and the second angle are the same; or

[0016] The first angle and the second angle are smaller than 90°, and the first angle and the second angle are different in angle.

[0017] In some embodiments, the first angle and the second angle are less than or equal to 80 degrees and greater than or equal to 60 degrees; or

[0018] The first angle is less than or equal to 80 degrees and greater than or equal to 60 degrees; the second angle is less than or equal to 20 degrees and greater than 0 degree.

[0019] In some embodiments, the flow valve further includes a rectifying device, which is connected to the inlet section and is located at the front end of the inlet section along the flow direction of the measured fluid.

[0020] In some embodiments, a plurality of openings are provided on the rectifying device, and the area of ​​the openings near the center of the rectifying device is larger than the area of ​​the openings near the edge of the rectifying device.

[0021] In some embodiments, the flow valve further includes an opening adjustment device, which is connected to the flow detection device to adjust the opening of the valve body according to the flow rate and / or flow velocity of the measured fluid detected by the flow detection device.

[0022] Compared with the prior art, the utility model has obvious advantages and beneficial effects. By means of the above technical solution, the flow valve of the utility model can achieve considerable technical progress and practicality, and has wide industrial utilization value, and has at least the following advantages:

[0023] The flow valve of the utility model combines the flow meter with the valve, so that the flow meter can be installed at the same time as the valve is installed. There is no need to drill holes in the pipeline to install the flow meter, which ensures the integrity of the pipeline and reduces the risk of leakage in the pipeline. At the same time, it reduces the maintenance workload of maintenance personnel. The flow meter is set at the inlet section of the valve body with the same aperture, which can ensure the stability of the measured fluid flowing through the flow meter, thereby ensuring the accuracy of the flow rate and / or flow velocity detection of the measured fluid.

[0024] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a side view structural schematic diagram of a flow valve according to an embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the main structure of a flow valve according to an embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the main structure of a flow detection device according to an embodiment of the utility model;

[0028] Figure 4 A side structural schematic diagram of a flow detection device according to an embodiment of the utility model;

[0029] Figure 5 This is a schematic cross-sectional structure diagram of a pressure taking head according to an embodiment of the utility model;

[0030] Figure 6 It is a side view structural schematic diagram of a flow valve of another embodiment of the utility model;

[0031] Figure 7 The figure is a schematic structural diagram of a rectifier device according to an embodiment of the utility model.

[0032]

Explanation of symbols

[0033] 1: Valve body

[0034] 10: Import section

[0035] 11: Valve body

[0036] 2: Flow detection device

[0037] 20: Data acquisition unit

[0038] 200: Pressure taking element

[0039] 201: Take the pressure head

[0040] 2010: Via

[0041] 2011: First pressure surface

[0042] 2012: Second pressure surface

[0043] 2013: First Angle

[0044] 2014: The Second Angle

[0045] 202: Guide rod

[0046] 210: Pressure sensing element

[0047] 22: Data processing unit

[0048] 3: Rectification device

[0049] 30: Opening DETAILED DESCRIPTION

[0050] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation method and effects of the flow valve proposed by the utility model are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0051] See also Figure 1 and Figure 2 As shown, according to an embodiment of the utility model, a flow valve is provided, comprising: a valve body 1 and a flow detection device 2.

[0052] In the flow direction of the measured fluid, the valve body 1 includes an inlet section 10 and a valve body 11 in sequence, and the inlet section 10 has a hole (not shown in the figure), and the inlet section 10 is connected to the valve body 11 through the hole. The hole diameters of the holes at any position of the inlet section 10 are the same.

[0053] It should be noted that due to errors in the manufacturing process, there will be a certain difference in the apertures of the holes at different positions of the inlet section 10, and the difference caused by the error should also be considered that the apertures of the holes at any position of the inlet section 10 are the same.

[0054] The valve body 1 can be a ball valve, a semi-ball valve, a gate valve, a butterfly valve, a needle valve, etc. The utility model is not limited to the specific type of valve.

[0055] The flow detection device 2 is arranged at the inlet section 10 of the valve body 1, and a part of the flow detection device 2 extends into the channel of the inlet section 10 to contact the measured fluid flowing through the inlet section 10 to complete the detection of the flow rate and / or flow velocity of the measured fluid flowing through the valve body 1.

[0056] In the utility model, the flow detection device 2 is arranged at the inlet section 10, and a part of the flow detection device 2 extends into the channel of the inlet section 10 to detect the measured fluid, and the channel at any position of the inlet section 10 of the valve body 1 is set to a structure with the same aperture, which ensures that the flow direction of the measured fluid flowing through the inlet section 10 is more stable, so that the flow detection device 2 avoids the influence of turbulence during the flow detection process, and effectively improves the accuracy of the flow and / or flow velocity detection of the measured fluid.

[0057] In one embodiment, the flow detection device 2 includes a data acquisition unit 20 and a data processing unit 22 .

[0058] The data acquisition unit 20 is electrically connected to the data processing unit 22. At least a portion of the data acquisition unit 20 extends into the channel of the inlet section 10 to generate sensing data through the measured fluid; the data processing unit 22 calculates the flow rate and / or flow velocity of the measured fluid based on the sensing data.

[0059] In a specific embodiment, the flow detection device 2 is a vortex flow detection device, and the data acquisition unit 20 of the vortex flow detection device is a vortex velocity probe embedded with a piezoelectric crystal, and the vortex velocity probe is inserted into the inlet section 10 of the valve body 1 to convert the Karman vortex frequency of the measured fluid into a current or voltage pulse signal proportional to the flow rate and / or flow velocity of the measured fluid. The data processing unit 22 calculates the flow rate and / or flow velocity of the measured fluid based on the current or voltage pulse signal.

[0060] In a specific embodiment, the flow detection device 2 is an electromagnetic flow detection device, and the data acquisition unit 20 of the electromagnetic flow detection device is an electromagnetic flow sensor, which extends into the inlet section 10 of the valve body 1. When the measured fluid flows through the electromagnetic flow sensor, the electromagnetic flow sensor generates an induced voltage. The data processing unit 22 calculates the flow rate and / or flow velocity of the measured fluid based on the induced voltage.

[0061] In a specific embodiment, the flow detection device 2 is a differential pressure flow detection device, and the data acquisition unit 20 of the differential pressure flow detection device includes a pressure-taking element 200 and a pressure-sensitive element 210, wherein the pressure-taking element 200 is connected to the pressure-sensitive element 210, and the pressure-sensitive element 210 is connected to the data processing unit 22.

[0062] Specifically, the pressure element 200 extends into the hole of the inlet section 10 to transport the measured fluid to the pressure sensing element 210, so that the pressure sensing element 210 detects the pressure difference of the measured fluid transported by the pressure element 200. The data processing unit 22 calculates the flow rate and / or flow velocity of the measured fluid flowing through the valve body 1 according to the pressure difference of the measured fluid detected by the pressure sensing element 210.

[0063] The data processing unit 22 may be connected to the pressure-sensitive element 210 by wired connection or wireless connection, as long as data transmission can be achieved, and the present invention is not limited thereto.

[0064] Optionally, the data processing unit 22 is an integrator, and the pressure sensing element 210 is a differential pressure transmitter.

[0065] In one embodiment, if Figure 3 and Figure 5 As shown, the pressure taking element 200 includes a pressure taking head 201 and a flow guide rod 202. The pressure taking head 201 is provided with two through holes 2010, and the flow guide rod 202 is provided with two flow guide holes (not shown in the figure). The pressure taking head 201 is connected to one end of the flow guide rod 202, and the two through holes 2010 are respectively connected to the two flow guide holes, and the other end of the flow guide rod 202 is connected to the pressure sensing element 210.

[0066] After the measured fluid flows in through the two through holes 2010 of the pressure taking head 201 , it flows through the two guide holes of the guide rod 202 , and finally guides the measured fluid to the pressure sensing element 210 through the guide holes.

[0067] like Figure 5 As shown, along the flow direction of the measured fluid, the pressure head 201 includes a first pressure taking surface 2011 and a second pressure taking surface 2012 which are arranged opposite to each other, and the two through holes 2010 of the pressure head 201 are connected to the first pressure taking surface 2011 and the second pressure taking surface 2012 respectively.

[0068] In one embodiment, if Figure 5 As shown, a first angle 2013 is formed between the first pressure-taking surface 2011 and the flow direction of the measured fluid, and a second angle 2014 is formed between the second pressure-taking surface 2012 and the flow direction of the measured fluid. Both the first angle 2013 and the second angle 2014 are less than or equal to 90 degrees.

[0069] The first pressure taking surface 2011 of the pressure taking head 201 is a full pressure taking surface, and the second pressure taking surface 2012 is a static pressure taking surface. The full pressure taking surface is the pressure taking surface facing the flow direction of the measured fluid, and the static pressure taking surface is the pressure taking surface facing away from the flow direction of the measured fluid.

[0070] In a specific embodiment, the first angle 2013 formed by the first pressure-taking surface 2011 and the flow direction of the measured fluid is 90 degrees, and the second angle 2014 formed by the second pressure-taking surface 2012 and the flow direction of the measured fluid is 90 degrees. In other words, the first pressure-taking surface 2011 and the second pressure-taking surface 2012 of the pressure head 201 are both perpendicular to the flow direction of the measured fluid.

[0071] It is understandable that due to factors such as production process, there may be errors between the first angle 2013 and the second angle 2014. Therefore, when there is a slight deviation between the first angle 2013 and the second angle 2014, it should still be considered that the first pressure-taking surface 2011 and the second pressure-taking surface 2012 are both perpendicular to the flow direction of the measured fluid.

[0072] In another specific embodiment, the first angle 2013 formed by the first pressure-taking surface 2011 and the flow direction of the measured fluid is less than 90 degrees, and the second angle 2014 formed by the second pressure-taking surface 2012 and the flow direction of the measured fluid is less than 90 degrees. In other words, the first pressure-taking surface 2011 and the second pressure-taking surface 2012 of the pressure-taking head 201 both form an acute angle with the flow direction of the measured fluid. By setting the first pressure-taking surface 2011 and the second pressure-taking surface 2012 of the pressure-taking member to an inclined structure, the eddy current formed by the measured fluid at the pressure-taking head 201 can be reduced.

[0073] In one embodiment, a first angle 2013 formed by the first pressure taking surface 2011 of the pressure taking head 201 and the flow direction of the measured fluid and a second angle 2014 formed by the second pressure taking surface 2012 and the flow direction of the measured fluid are the same.

[0074] Optionally, a first angle 2013 formed by the first pressure taking surface 2011 of the pressure taking head 201 and the flow direction of the measured fluid and a second angle 2014 formed by the second pressure taking surface 2012 and the flow direction of the measured fluid are both less than or equal to 80 degrees and greater than or equal to 60 degrees.

[0075] Preferably, a first angle 2013 formed by the first pressure-taking surface 2011 of the pressure-taking head 201 and the flow direction of the measured fluid and a second angle 2014 formed by the second pressure-taking surface 2012 and the flow direction of the measured fluid are 70 degrees.

[0076] It is understandable that due to factors such as production process, there may be errors between the first angle 2013 and the second angle 2014. Therefore, when there is a slight deviation between the first angle 2013 and the second angle 2014, it should still be considered to fall within the protection scope of the present utility model.

[0077] In one embodiment, if Figure 5As shown, a first angle 2013 formed by the first pressure-taking surface 2011 of the pressure-taking head 201 and the flow direction of the measured fluid is different from a second angle 2014 formed by the second pressure-taking surface 2012 and the flow direction of the measured fluid.

[0078] Optionally, the first angle 2013 formed by the first pressure-taking surface 2011 of the pressure-taking head 201 and the flow direction of the measured fluid is less than or equal to 80 degrees and greater than or equal to 60 degrees. The second angle 2004 formed by the second pressure-taking surface 2012 and the flow direction of the measured fluid is less than or equal to 20 degrees and greater than 0 degrees.

[0079] Preferably, the first angle 2013 formed by the first pressure-taking surface 2011 of the pressure-taking head 200 and the flow direction of the measured fluid is 70 degrees, and the second angle 2014 formed by the second pressure-taking surface 2012 and the flow direction of the measured fluid is 10 degrees.

[0080] It is understandable that due to factors such as production process, there may be errors between the first angle 2013 and the second angle 2014. Therefore, when there is a slight deviation between the first angle 2013 and the second angle 2014, it should still be considered to fall within the protection scope of the present utility model.

[0081] In one embodiment, if Figure 6 As shown, the flow valve also includes a rectifying device 3, which is connected to the inlet section 10 and is located at the front end of the inlet section 10 along the flow direction of the measured fluid, that is, the rectifying device 3 is arranged at the front end of the flow detection device 2 to rectify the measured fluid flowing into the inlet section 10, and then the flow detection device 2 is used to detect the flow rate and / or flow velocity of the measured fluid after rectification to improve the accuracy of the flow rate and / or flow velocity detection of the measured fluid.

[0082] Optionally, the rectifying device 3 is connected to the front end of the inlet section 10 via a flange.

[0083] In one embodiment, if Figure 7 As shown, a plurality of openings 30 are provided on the rectifying device 3 , and the areas of the plurality of openings 30 are not the same. The area of ​​the opening 30 near the center of the rectifying device 3 is larger than the area of ​​the opening 30 near the edge of the rectifying device 3 .

[0084] It is understandable that due to friction and other reasons, the flow rate of the measured fluid near the inner wall of the pipeline is slower than the flow rate of the measured fluid in the central area of ​​the pipeline. Therefore, by setting the area of ​​the opening 30 near the edge of the rectifier 3 to be smaller than the area of ​​the opening 30 near the center of the rectifier 3, the flow rate of the measured fluid flowing into the inlet section 10 is increased through the relatively small area of ​​the opening 30, thereby making the stability of the measured fluid in the inlet section 10, thereby improving the accuracy of the flow rate and / or flow rate detection of the measured fluid.

[0085] In one embodiment, the flow valve also includes an opening adjustment device (not shown in the figure), which is connected to the flow detection device 2 to adjust the opening of the valve body 1 according to the flow rate and / or flow velocity of the measured fluid detected by the flow detection device 2.

[0086] The valve body 1 also includes a valve shaft and a valve core. The valve core is arranged inside the valve body 1. A part of the valve shaft extends into the interior of the valve body 1 and is connected to the valve core. The valve core can be driven to rotate by rotating the valve shaft to adjust the opening of the valve body 1, thereby realizing the adjustment of the flow rate and / or flow velocity of the measured fluid.

[0087] Optionally, the opening adjustment device is connected to the valve shaft of the valve body 1 to drive the valve shaft to rotate and drive the valve core to rotate.

[0088] In one embodiment, the opening adjustment device is a motor.

[0089] The flow valve of the utility model combines the flow meter with the valve, so that the flow meter can be installed at the same time as the valve is installed. There is no need to drill holes in the pipeline to install the flow meter, which ensures the integrity of the pipeline and reduces the risk of leakage in the pipeline. At the same time, it reduces the maintenance workload of maintenance personnel. The flow meter is set at the inlet section of the valve body with the same aperture, which can ensure the stability of the measured fluid flowing through the flow meter, thereby ensuring the accuracy of the flow rate and / or flow velocity detection of the measured fluid.

[0090] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A flow valve, characterized in that: include: The valve body and the flow detection device are provided. Along the flow direction of the measured fluid, the valve body comprises an inlet section and a valve body in sequence, and the inlet section has a channel connected to the valve body; The flow detection device is arranged at the inlet section, and a part of the flow detection device extends into the channel of the inlet section to contact the measured fluid flowing through the inlet section. The aperture of the channel at any position of the inlet section is the same.

2. The flow valve according to claim 1, characterized in that: The flow detection device includes a data acquisition unit and a data processing unit; The data acquisition unit is electrically connected to the data processing unit, and at least a portion of the data acquisition unit extends into the channel of the inlet section to generate sensing data through the measured fluid; The data processing unit calculates the flow rate and / or flow velocity of the measured fluid according to the sensing data.

3. The flow valve according to claim 2, characterized in that: The data acquisition unit includes a pressure-taking element and a pressure-sensing element; Wherein, the pressure-taking element is connected to the pressure-sensitive element, and the pressure-sensitive element is connected to the data processing unit; The pressure-taking element extends into the channel of the inlet section to transport the measured fluid to the pressure-sensitive element. The pressure-sensitive element detects the pressure difference of the measured fluid transported by the pressure-taking element. The data processing unit calculates the flow rate and / or flow velocity of the measured fluid based on the pressure difference detected by the pressure-sensitive element.

4. The flow valve according to claim 3, characterized in that: The pressure taking element comprises a pressure taking head and a flow guide rod, the pressure taking head is provided with two through holes, the flow guide rod is provided with two flow guide holes, and the two through holes are respectively connected with the two flow guide holes; Along the flow direction of the measured fluid, the pressure head includes a first pressure taking surface and a second pressure taking surface which are arranged opposite to each other, and the two through holes are respectively connected to the first pressure taking surface and the second pressure taking surface.

5. The flow valve according to claim 4, characterized in that: A first angle is formed between the first pressure-taking surface and the flow direction of the measured fluid, a second angle is formed between the second pressure-taking surface and the flow direction of the measured fluid, and the first angle and the second angle are less than or equal to 90 degrees.

6. The flow valve according to claim 5, characterized in that: The first angle and the second angle are less than 90°, and the first angle and the second angle are the same; or The first angle and the second angle are smaller than 90°, and the first angle and the second angle are different in angle.

7. The flow valve according to claim 6, characterized in that: The first angle and the second angle are less than or equal to 80 degrees and greater than or equal to 60 degrees; or The first angle is less than or equal to 80 degrees and greater than or equal to 60 degrees; the second angle is less than or equal to 20 degrees and greater than 0 degree.

8. The flow valve according to claim 1, characterized in that: The flow valve further comprises a rectifying device, which is connected to the inlet section and is located at the front end of the inlet section along the flow direction of the measured fluid.

9. The flow valve according to claim 8, characterized in that: The rectifying device is provided with a plurality of openings, and the area of ​​the openings close to the center of the rectifying device is larger than the area of ​​the openings close to the edge of the rectifying device.

10. The flow valve according to claim 1, characterized in that: The flow valve further comprises an opening adjustment device, which is connected to the flow detection device to adjust the opening of the valve body according to the flow rate and / or flow velocity of the measured fluid detected by the flow detection device.

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