A dual-probe anti-interference vortex flow meter

Abstract

This utility model discloses an anti-interference vortex flowmeter dual probe, including a lower probe housing and an upper probe housing. A lower voltage element is installed inside the lower probe housing, and an upper voltage element is installed inside the upper probe housing. The lower probe housing has a lower blind hole for positioning and inserting the lower voltage element; the upper probe housing has an upper blind hole for positioning and inserting the upper voltage element and a through hole for the lower signal line of the lower voltage element to pass through, with the upper blind hole and the through hole spaced apart. This utility model can simultaneously solve the problems of mutual vibration interference between the upper and lower voltage elements connected in series within the same shared channel and mutual contact interference between the lower signal line of the upper voltage element and the upper voltage element in existing vortex flowmeter dual probes.

Description

Technical Field

[0001] This utility model relates to a dual-probe anti-interference vortex flow meter. Background Technology

[0002] As a commonly used flow measurement device, the accuracy of the vortex flow meter probe directly affects the reliability of the flow data. In existing technology, some vortex sensors incorporate two voltage elements, one for measuring vibration signals and the other for measuring flow signals. These two voltage elements are installed inside the upper and lower probe housings, with the inner holes of the upper and lower probe housings being interconnected. However, practical use has revealed the following shortcomings: First, when the upper and lower voltage components are connected in series, they will vibrate and interfere with each other, resulting in a decrease in measurement accuracy and precision. Secondly, the signal lines of the lower voltage element and the upper voltage element share the same channel, which will come into contact with each other, causing contact interference, which will further affect the accuracy and precision of signal transmission.

[0003] The prior art document CM203745009U (which is the closest prior art to this application) discloses a vortex flow meter probe that leads the signal line of the lower voltage element out from a single flange. This method not only leads the signal line out too close, causing it to be exposed and posing a safety hazard, but also cannot completely solve the problem of mutual interference caused by the connection between the upper and lower inner holes. As a result, it cannot meet the usage requirements of high-precision flow and vibration dual data signal measurement scenarios. Utility Model Content

[0004] This invention provides an anti-interference vortex flowmeter dual probe that can simultaneously solve the problems of mutual vibration interference between the upper and lower voltage elements connected in series in the same channel and mutual contact interference between the lower signal line of the upper voltage element and the upper voltage element in existing vortex flowmeter dual probes.

[0005] To achieve the above objectives, the present invention provides a dual-probe anti-interference vortex flowmeter, comprising a lower probe housing and an upper probe housing, wherein a lower voltage element is installed inside the lower probe housing, and an upper voltage element is installed inside the upper probe housing. The lower probe housing is characterized by having a lower blind hole for positioning and inserting the lower voltage element; the upper probe housing is characterized by having an upper blind hole for positioning and inserting the upper voltage element and a through hole for the lower signal line of the lower voltage element to pass through, with the upper blind hole and the through hole spaced apart.

[0006] Furthermore, the lower blind hole includes a lower voltage element positioning hole section and an upper signal line avoidance hole section.

[0007] Furthermore, the first gap between the lower blind hole of the lower probe housing and the lower voltage element is filled with sealant.

[0008] Furthermore, the second gap between the upper blind hole of the upper probe housing and the upper voltage element is filled with sealant.

[0009] Furthermore, the lower end of the through hole is provided with a funnel-shaped guide opening.

[0010] Furthermore, both the lower voltage element and the upper blind hole have rectangular cross-sections.

[0011] Furthermore, both the lower voltage element and the lower voltage element positioning hole section have rectangular cross-sections.

[0012] First, this invention features a unique advantage: the lower voltage element is installed in the lower blind hole of the lower probe housing, and the upper voltage element is installed in the upper blind hole of the upper probe housing. These two blind holes are independent and have no direct connection. This means the upper and lower voltage elements are located within independent blind hole chambers, eliminating the direct vibration transmission path through a shared channel. Furthermore, the spaced arrangement of the through hole and the upper blind hole significantly reduces the vibration crosstalk intensity between the upper and lower elements. Additionally, the spaced distribution of the through hole and the upper blind hole in the upper probe housing allows the lower signal line to run through an independent through hole, achieving physical isolation from the upper voltage element in the upper blind hole. This overcomes the contact interference problem caused by friction, compression, or proximity between the lower signal line and the upper voltage element in traditional shared channels. Overall, it divides the upper and lower voltage elements, the lower signal line, and the upper voltage element into three independent spatial regions, with each path not interfering with the others, thus cutting off vibration crosstalk and contact interference. Therefore, it can simultaneously solve the problems of mutual vibration interference between the upper and lower voltage elements connected in the same shared channel in existing vortex flowmeter dual-probe systems, as well as the contact interference between the lower signal line and the upper voltage element. Secondly, since the lower signal line is concealed through the through hole, this utility model replaces the existing (such as CM203745009U) exposed lead-out design at the flange, which not only avoids the safety hazards caused by the exposed lower signal line, but also can adapt to complex working environments. Third, in this utility model, the lower blind hole is divided into a lower voltage element positioning hole section and an upper signal line avoidance hole section. The positioning hole section is used for the precise positioning of the lower voltage element positioning hole section, and the upper signal line avoidance hole section is used for the avoidance of a section of the lower voltage element at the contact point with the lower signal line, which is convenient for installation. The trumpet-shaped guide opening at the lower end of the through hole facilitates the insertion of the lower signal line, which can improve assembly efficiency. Fourth, this utility model uses sealant to fill and seal the gaps in various parts, which prevents the signal lines and upper and lower voltage components from becoming loose, reduces loosening interference, and also improves the protection level. Fifth, through reasonable structural optimization, this utility model can effectively solve the problems of vibration interference, contact interference and signal line safety of existing dual probes of vortex flowmeters, while also having the advantages of high measurement accuracy, strong anti-interference ability, safety and reliability, and convenient assembly. Attached Figure Description

[0013] Figure 1 This is a front cross-sectional view (without sealant) of a dual-probe anti-interference vortex flowmeter according to this utility model when it is assembled.

[0014] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0015] Figure 3 This is a cross-sectional perspective view of a dual-probe anti-interference vortex flowmeter of this utility model after assembly (without sealant).

[0016] Figure 4-5 This is an exploded view of a dual-probe anti-interference vortex flowmeter according to this utility model.

[0017] Figure 6 This is a 3D view of the lower probe housing.

[0018] Figure 7-8 This is a 3D view of the upper probe housing.

[0019] Figure 9 This is a 3D cross-sectional view of the upper probe housing.

[0020] Figure 10 This is a front cross-sectional view of a dual-probe anti-interference vortex flowmeter of this utility model after assembly (with sealant already filled).

[0021] Figure 11 yes Figure 10 Enlarged view of section B in the middle.

[0022] Figure 12 This is a three-dimensional view of a dual-probe anti-interference vortex flowmeter of this utility model after assembly (with sealant already filled). Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example: See Figure 1-2 A dual-probe anti-interference vortex flowmeter includes a lower probe housing 1, an upper probe housing 2, a lower voltage element 3, and an upper voltage element 4. The key to solving the aforementioned technical problem lies in: See also Figure 1-2The lower probe housing 1 has a lower blind hole 1-1 inside. The lower blind hole 1-1 is divided into a lower voltage element positioning hole section 1-11 and an upper signal line avoidance hole section 1-12. The lower voltage element 3 is positioned and installed in the lower voltage element positioning hole section 1-11, and its lower signal line 300 extends upward after passing through the upper signal line avoidance hole section 1-12.

[0024] See also Figure 1-2 The upper probe housing 2 has an upper blind hole 2-1 and a through hole 2-2 inside. The upper blind hole 2-1 is used to position and install the upper voltage element 4. The through hole 2-2 is used for the lower signal line 300 to pass through. The upper blind hole 2-1 and the through hole 2-2 are spaced apart and physically isolated from each other so that they cannot be directly connected.

[0025] With the above structure, since the lower voltage element 3 is installed in the lower blind hole 1-1 of the lower probe housing 1, and the upper voltage element 4 is installed in the upper blind hole 2-1 of the upper probe housing 2, the two blind holes are independent of each other and have no direct connecting path. In this way, the upper and lower voltage elements are located in independent blind hole chambers, without a direct vibration transmission path through a shared channel. At the same time, the spaced arrangement of the through hole and the upper blind hole greatly reduces the intensity of vibration crosstalk between the upper and lower elements. In addition, since the through hole and the upper blind hole of the upper probe housing 2 are distributed alternately, the lower signal line is physically isolated from the upper voltage element in the upper blind hole by running through an independent through hole. This overcomes the contact interference problem caused by mutual friction, squeezing or proximity between the lower signal line and the upper voltage element in the traditional shared channel. Overall, it divides the upper and lower voltage elements, the lower signal line and the upper voltage element into three independent spatial regions, with each path not interfering with the others, thereby cutting off vibration crosstalk and contact interference. Therefore, it can simultaneously solve the problems of mutual vibration interference between the upper and lower voltage elements in the existing dual probes of vortex flowmeters, which are connected in the same channel, and mutual contact interference between the lower signal line of the upper voltage element and the upper voltage element.

[0026] See also Figure 3-10 In this embodiment, the lower signal line 300 is two separate lines, each wrapped independently. Therefore, there are two through holes 2-2 inside the upper probe housing 2, and the two lower signal lines 300 pass through the two through holes 2-2 respectively, and are installed independently.

[0027] See also Figure 7 Preferably, the two through holes 2-2 are symmetrically located on both sides of the width direction of the rectangular cross section of the upper blind hole 2-1.

[0028] It should be noted that in other embodiments, if the two lower signal lines 300 are wrapped together as a whole, they only need to pass through one through hole 2-2. In this case, only one through hole 2-2 needs to be opened inside the upper probe housing 2.

[0029] See also Figure 3-9 Furthermore, the cross-sections of the lower voltage element 3 and the upper blind hole 2-1 are both rectangular, and the cross-sections of the lower voltage element 3 and the lower voltage element positioning hole section 1-11 are also rectangular. Through the anti-rotation limiting effect of the rectangular structure, the stability of the voltage element after installation is ensured.

[0030] Specifically, the cross-section of the upper signal line avoidance hole section 1-12 can be circular, rectangular or other shapes, as long as the shape can be avoided by the routing.

[0031] See also Figure 2 and Figure 9 Furthermore, the lower end of the through hole 2-2 is provided with a trumpet-shaped guide opening 2-21, which facilitates the smooth upward insertion of the lower signal line 300 into the through hole 2-2.

[0032] See also Figure 10-11 Furthermore, to improve the fixation effect and sealing performance, the first gap between the lower blind hole 1-1 of the lower probe housing 1 and the lower voltage element 3 is filled with sealant M, and the second gap between the upper blind hole 2-1 of the upper probe housing 2 and the upper voltage element 4 is filled with sealant M.

[0033] The product assembly method in this embodiment is as follows: (a) Assembly of the lower probe housing (1) Installation of the lower voltage element: Align the lower voltage element 3 with the rectangular cross section of the lower voltage element positioning hole section 1-11 of the lower probe housing 1, and slowly push it in until the bottom of the lower voltage element 3 is completely in contact with the bottom surface of the lower voltage element positioning hole section 1-11. The lower voltage element 3 is in the center position without tilting or circumferential rotation within the lower voltage element positioning hole section 1-11. (2) Signal line combing: Comb the lower signal line 300 of the lower voltage element 3 upwards smoothly within the signal line clearance hole section 1-12; (3) Sealant filling and curing: Inject sealant M into the first gap between the lower blind hole 1-1 of the lower probe housing 1 and the lower voltage element 3. The amount of sealant should be enough to completely cover the gap without air bubbles or voids. After injection, let it stand and wait for the sealant to fully cure according to the sealant product instructions to form a fixed sealing structure. (ii) Assembly of the upper probe housing (1) Installation of upper voltage element: Align the upper voltage element 4 with the rectangular section of the upper blind hole 2-1 of the upper probe housing 2, and slowly push it in until the bottom of the upper voltage element 4 is completely in contact with the bottom surface of the upper blind hole 2-1. The upper voltage element 4 is in the upper blind hole 2-1 without tilting, without circumferential rotation, and is in the center position. (2) Signal line combing: Comb the upper signal line 400 of the upper voltage element 4 upwards smoothly to form the upper blind hole 2-1. Keep the signal line straight during combing and avoid bending or twisting. (3) Sealant filling and curing: Inject sealant M into the second gap between the upper blind hole 2-1 of the upper probe housing 2 and the upper voltage element 4. The amount of sealant should be enough to completely cover the gap without any air bubbles. After injection, let it stand and wait for the sealant to fully cure according to the sealant product instructions to complete the fixing and sealing of the upper voltage element (see figure).

[0034] (III) Assembly of upper and lower probe housings (1) Lower signal line insertion: Align the free end of the lower signal line 300 extending from the lower probe housing 1 with the trumpet-shaped guide opening 2-21 at the lower end of the through hole 2-2 of the upper probe housing 2, and slowly insert it into the through hole 2-2 along the inclined surface of the guide opening; during the entire insertion process, gently pull the end of the signal line to ensure that the line runs smoothly without jamming or wear, until the signal line is smoothly pulled out from the upper end of the through hole 2-2. After pulling it out, tidy up the signal line to avoid twisting or pressure. (2) Connecting the upper and lower probe housings: Fit the flange mating end faces of the upper probe housing 2 and the lower probe housing 1 together to ensure that the holes are accurately aligned and the axes are concentric; fix the upper and lower probe housings into one piece by welding.

[0035] (3) Sealing and filling of the third gap: Slowly inject sealant M into the third gap between the signal line 300 and the through hole 2-2 from the upper end of the through hole 2-2. After injection, let it stand and wait for the sealant layer to fully cure according to the sealant product instructions to form a fixed sealing structure. During the injection process, the sealant M will flow along the third gap to the flared guide port 2-21 and flow down along the guide port, which will internally compensate and fill the internal contact surface between the upper and lower probe housings (see [link]). Figure 10-11 ).

[0036] Performance characteristics and technical analysis of this utility model: First, in this embodiment, the upper probe housing adopts a design with alternating blind holes and through holes. The upper voltage element is installed in the upper blind hole, while the lower signal line passes through an independent through hole. This avoids direct vibration transmission between the upper and lower voltage elements through the through hole, which can significantly reduce mutual vibration interference. At the same time, the lower signal line is routed through an independent through hole, achieving physical isolation from the upper voltage element. This completely solves the contact interference problem caused by the signal line and voltage element sharing the same channel, ensuring the stability and accuracy of signal transmission.

[0037] Secondly, in this embodiment, the lower signal line is concealed through a through hole, replacing the existing (such as CM203745009U) exposed lead-out design at the flange. This not only avoids the safety hazards caused by the exposed lower signal line, but also adapts to complex working environments. Third, in this embodiment, the lower blind hole is divided into a lower voltage element positioning hole section and an upper signal line avoidance hole section. The positioning hole section is used for the precise positioning of the lower voltage element positioning hole section, and the upper signal line avoidance hole section is used for the avoidance of a section of the lower voltage element at the contact point with the lower signal line, which is convenient for installation. The flared guide opening at the lower end of the through hole facilitates the insertion of the lower signal line, which can improve assembly efficiency. Fourth, in this embodiment, sealant M is filled into all gaps between the lower blind hole and the lower voltage element, the upper blind hole and the upper voltage element, and the signal line and the through hole. After curing, an integrated fixed and sealed structure is formed, which not only firmly locks the voltage element and the signal line, eliminating the risk of loosening and displacement, but also compensates for the internal contact surfaces of the upper and lower housings by the sealant flowing down along the guide opening, further enhancing the sealing performance and structural strength of the housing connection. This can fill any gaps that may still exist inside the upper probe housing after welding. Overall, this effectively prevents the signal line and the upper and lower voltage elements from loosening, reduces loosening interference, and also improves the protection level. Fifth, this embodiment effectively solves the problems of vibration interference, contact interference, and signal line safety of existing dual probes of vortex flowmeters through reasonable structural optimization. At the same time, it has the advantages of high measurement accuracy, strong anti-interference ability, safety and reliability, and convenient assembly. In addition, its overall structure adopts an integrated design, and the size is small after the upper and lower shells are connected. The lower signal line is not exposed and no additional installation space is required.

[0038] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A dual-probe anti-interference vortex flowmeter, comprising a lower probe housing (1) and an upper probe housing (2), wherein a lower voltage element (3) is installed inside the lower probe housing (1), and an upper voltage element (4) is installed inside the upper probe housing (2), characterized in that: The lower probe housing (1) is provided with a lower blind hole (1-1) for positioning and inserting the lower voltage element (3). The upper probe housing (2) is provided with an upper blind hole (2-1) for positioning and inserting the upper voltage element (4) and a through hole (2-2) for the lower signal line (300) of the lower voltage element (3) to pass through, and the upper blind hole (2-1) and the through hole (2-2) are spaced apart.

2. The anti-interference vortex flowmeter with dual probes according to claim 1, characterized in that: The lower blind hole (1-1) includes a lower voltage element positioning hole section (1-11) and an upper signal line avoidance hole section (1-12).

3. The anti-interference vortex flowmeter with dual probes according to claim 1, characterized in that: The first gap between the lower blind hole (1-1) of the lower probe housing (1) and the lower voltage element (3) is filled with sealant.

4. The anti-interference vortex flowmeter with dual probes according to any one of claims 1-3, characterized in that: The second gap between the upper blind hole (2-1) of the upper probe housing (2) and the upper voltage element (4) is filled with sealant.

5. The anti-interference vortex flowmeter with dual probes according to claim 1, characterized in that: The lower end of the through hole (2-2) is provided with a funnel-shaped guide opening (2-21).

6. The dual-probe anti-interference vortex flowmeter according to claim 1, characterized in that: The cross-sections of the lower voltage element (3) and the upper blind hole (2-1) are both rectangular.

7. The anti-interference vortex flowmeter with dual probes according to claim 2, characterized in that: The cross-sections of the lower voltage element (3) and the lower voltage element positioning hole section (1-11) are both rectangular.

8. The anti-interference vortex flowmeter with dual probes according to claim 1, characterized in that: The third gap between the lower signal line (300) and the through hole (2-2) is filled with sealant.

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