Vortex flowmeter and method of injecting glue

Abstract

The present application belongs to the technical field of flow detection, and particularly relates to a device for detecting flow through a vortex, and more particularly to a vortex flowmeter and a glue injection method thereof. The vortex flowmeter is provided with a glue injection shell sleeved outside a measuring pipe and an auxiliary glue injection member arranged above a protective sleeve. Through one-time glue injection into the glue injection shell, the overall covering of the measuring pipe and the filling of the internal cavity of the protective sleeve are simultaneously completed. The complex glue injection process of two steps, first inside and then outside, is not required, the production steps are significantly reduced, the operation difficulty and working hours are reduced, and since the glue in the glue injection shell covers the overall measuring pipe to form an effective damping layer, vibration from the pipeline can be absorbed and attenuated, and the vibration is prevented from being transmitted to the protective sleeve and the internal piezoelectric element. Meanwhile, the glue in the glue injection shell that is higher than the protective sleeve is guided by the auxiliary glue injection member, so that the glue orderly enters the glue inlet of the protective sleeve and flows into the glue injection port of the protective sleeve uniformly and stably.

Description

Technical Field

[0001] This invention belongs to the technical field of flow detection, specifically relating to a device for detecting flow through flowing vortices, and more particularly to a vortex flow meter and its glue injection method. Background Technology

[0002] A vortex flow meter is a flow measurement instrument widely used in industrial process control.

[0003] To ensure the stable operation of piezoelectric elements under complex and even harsh pipeline conditions, they are typically sealed in a protective sleeve, with adhesive injected into the sleeve for fixation and insulation. However, vibrations in the measuring tube are directly transmitted to the protective sleeve and the internal piezoelectric element, resulting in a large amount of noise in the detection signal, which severely affects the flow meter's measurement accuracy and stability.

[0004] To address the aforementioned vibration transmission problem, related technologies involve adding an additional adhesive layer to the outside of the measuring tube for buffering and fixation. However, this typically necessitates an independent adhesive injection step and structure; that is, the adhesive must first be injected and cured inside the protective sleeve before the adhesive is injected onto the outside of the measuring tube. This step-by-step adhesive injection process undoubtedly increases the complexity and time required for production. If an overflow method is used, the adhesive may collide when entering the inlet of the protective sleeve, failing to completely encapsulate the piezoelectric element and thus compromising its stable operation.

[0005] Therefore, how to reduce the complexity of the glue injection process while ensuring that the glue flows evenly and stably into the glue injection port of the protective sleeve is a technical problem that urgently needs to be solved.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0007] This disclosure provides at least one vortex flow meter and its glue injection method.

[0008] In a first aspect, embodiments of this disclosure provide a vortex flow meter, comprising:

[0009] The measuring tube contains a vortex-generating column inside.

[0010] A piezoelectric element is disposed inside the measuring tube and located behind the vortex generating column along the liquid inflow direction;

[0011] A protective sleeve extends through the side wall of the measuring tube, and the piezoelectric element is disposed inside the protective sleeve;

[0012] The colloid is formed by injection through a glue injection shell. During glue injection, the glue injection shell is fitted onto the measuring tube, and a protective sleeve is placed inside the glue injection shell. The glue inlet of the protective sleeve is located near the top of the glue injection shell.

[0013] The outer shell is fitted onto the colloid and is used to encapsulate the colloid.

[0014] An auxiliary adhesive injection component is provided above the protective sleeve;

[0015] During glue injection, glue is injected into the glue injection shell to cover the measuring tube. When the glue level is above the protective sleeve, the glue is introduced into the glue inlet of the protective sleeve through the auxiliary glue injection component. After the glue has cured and formed a colloid, the glue injection shell is removed.

[0016] In one alternative embodiment, the auxiliary dispensing component includes an annular cap that covers the top of the protective sleeve;

[0017] The annular cover has a notch on its side wall;

[0018] A flow guide plate is provided inside the notch;

[0019] The inlet of the guide plate is connected to the inner cavity of the glue injection shell, and the outlet of the guide plate is connected to the glue inlet of the protective sleeve.

[0020] In one alternative embodiment, the top of the annular cover has a fan-shaped opening along the circumferential direction;

[0021] During UV curing, light enters the glue inlet through a fan-shaped nozzle.

[0022] In one alternative embodiment, the annular cover has a notch in the middle, and an extrusion block extends downward along the sidewall of the notch;

[0023] The annular cap is elastically connected to the top of the protective sleeve by a return spring;

[0024] After the glue inlet is filled with glue, the annular cover is pressed down by external force to compact the glue inlet through the extrusion block.

[0025] In one alternative embodiment, the lower end of the extrusion block extends into the glue inlet;

[0026] Furthermore, the outer wall of the extrusion block is in contact with the inner wall of the glue inlet.

[0027] In one alternative embodiment, the guide vane is rotatably disposed within the notch;

[0028] During the flow diversion process, the flow diverter plate is in contact with the top of the protective sleeve;

[0029] When the annular cover is pressed down by external force, the guide plate is flipped upward to close the notch and prevent the glue in the glue injection shell from flowing back into the protective sleeve.

[0030] In one optional embodiment, the sidewall of the notch is provided with a first positioning hole and a second positioning hole;

[0031] The sidewall of the guide plate is provided with positioning protrusions;

[0032] During the flow diversion process, the positioning protrusion engages with the first positioning hole;

[0033] When an external force presses down on the annular cover, it simultaneously causes the guide plate to flip upwards to close the notch. At the same time, the positioning protrusion engages with the second positioning hole.

[0034] In one optional embodiment, a flow guiding channel is provided at the top of the flow guide plate;

[0035] Furthermore, the cross-sectional area of ​​the inlet of the guide plate is greater than the cross-sectional area of ​​the outlet of the guide plate.

[0036] In one optional embodiment, the protective sleeve is T-shaped;

[0037] The side wall of the measuring tube is provided with an insertion hole that is compatible with the protective sleeve;

[0038] The protective sleeve is equipped with anti-fooling posts and snap-fit ​​blocks;

[0039] The insertion hole and the adapter of the snap-fit ​​block are provided with snap-fit ​​grooves.

[0040] Secondly, this disclosure also provides a glue injection method for a vortex flow meter as described above, the glue injection method comprising:

[0041] Place the piezoelectric element into the protective sleeve;

[0042] Inject the glue into the glue-filling housing;

[0043] The glue, which is submerged above the protective sleeve, is introduced into the glue inlet of the protective sleeve through the auxiliary glue dispensing device;

[0044] The adhesive inside the protective case is cured using an external curing light source;

[0045] Then, the glue inside the injection shell is cured by an external light source to form a colloid, and then the injection shell is removed.

[0046] The beneficial effects of this invention are that the vortex flowmeter and its glue injection method, by setting a glue injection shell sleeved outside the measuring tube and setting an auxiliary glue injection component above the protective sleeve, can simultaneously complete the overall coverage of the measuring tube and the filling of the internal cavity of the protective sleeve by injecting glue into the glue injection shell in one operation. This eliminates the need for a complex two-step, inside-to-outside glue injection process, significantly reducing production steps, operational difficulty, and working time. Because the glue inside the glue injection shell completely covers the measuring tube, forming an effective damping layer, it can absorb and attenuate vibrations from the pipeline, preventing vibrations from being transmitted to the protective sleeve and the internal piezoelectric components. Simultaneously, the auxiliary glue injection component guides the glue in the glue injection shell, ensuring that the glue enters the glue inlet of the protective sleeve in an orderly manner, allowing the glue to flow evenly and stably into the glue injection port of the protective sleeve.

[0047] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0048] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0049] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0050] Figure 1 An assembly drawing of a vortex flow meter provided in an embodiment of this disclosure;

[0051] Figure 2 A cross-sectional view of a vortex flow meter provided in an embodiment of this disclosure;

[0052] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0053] Figure 4 This is a schematic diagram illustrating the fit between the protective sleeve and the auxiliary adhesive injection component provided in an embodiment of this disclosure;

[0054] Figure 5 This is a schematic diagram showing the cooperation between the protective sleeve and the auxiliary adhesive injection component after pressing the annular cover according to an embodiment of this disclosure;

[0055] Figure 6A flowchart illustrating the glue injection method for a vortex flowmeter provided in this embodiment of the disclosure;

[0056] Figure 7 This is a schematic diagram of the structure during glue injection provided in an embodiment of this disclosure.

[0057] In the diagram: 100, measuring tube; 110, vortex generating column; 200, piezoelectric element; 300, protective sleeve; 310, glue inlet; 400, glue injection shell; 410, colloid; 500, auxiliary glue injection component; 510, annular cover; 520, notch; 521, first positioning hole; 522, second positioning hole; 530, guide plate; 540, fan-shaped opening; 550, extrusion block; 560, return spring; 600, outer shell. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0060] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0061] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0062] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise expressly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0063] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0064] Research has revealed that in related technologies, an additional adhesive layer is added to the outside of the measuring tube to address vibration transmission issues, serving as a buffer and providing fixation. However, this typically necessitates an additional adhesive injection step and structure; that is, the adhesive is first injected and cured inside the protective sleeve before the adhesive is injected onto the outside of the measuring tube. This step-by-step adhesive injection process undoubtedly increases the complexity and time required for production. If an overflow method is used, the adhesive may collide when entering the inlet of the protective sleeve, failing to completely encapsulate the piezoelectric element and thus compromising its stable operation.

[0065] Based on the above research, this disclosure provides a vortex flowmeter and its glue injection method. By setting a glue injection shell 400 sleeved outside the measuring tube 100 and an auxiliary glue injection component 500 above the protective sleeve 300, the entire measuring tube 100 can be covered and the internal cavity of the protective sleeve 300 can be filled simultaneously by injecting glue into the glue injection shell 400 in one operation. This eliminates the need for a complex two-step, inside-out glue injection process, significantly reducing production steps, operational difficulty, and working time. Because the glue inside the glue injection shell 400 completely covers the measuring tube 100, it forms an effective damping layer that can absorb and attenuate vibrations from the pipe, preventing vibrations from being transmitted to the protective sleeve 300 and the internal piezoelectric element 200. Simultaneously, the auxiliary glue injection component 500 guides the glue in the glue injection shell 400 that has submerged the protective sleeve 300, allowing the glue to enter the glue inlet 310 of the protective sleeve 300 in an orderly manner, ensuring a uniform and stable flow of glue into the glue injection port of the protective sleeve 300.

[0066] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0067] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0068] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0069] Please see Figure 1 and Figure 2 At least one embodiment provides a vortex flow meter, comprising: a measuring tube 100, wherein a vortex generating column 110 is disposed inside the measuring tube 100; and a piezoelectric element 200 disposed within the measuring tube 100 and along the liquid inflow direction (such as...). Figure 1 As shown in F and Figure 2As shown in F1, it is located behind the vortex generating column; a protective sleeve 300 penetrates the side wall of the measuring tube 100, and the piezoelectric element 200 is disposed inside the protective sleeve 300; a colloid 410 is formed by injection through a glue injection shell 400. During glue injection, the glue injection shell 400 is fitted onto the measuring tube 100, and the protective sleeve 300 is disposed inside the glue injection shell 400, wherein the glue inlet 310 of the protective sleeve 300 is located near the top of the glue injection shell 400; outer A shell 600 is fitted over the colloid 410 and is used to encapsulate the colloid 410. An auxiliary dispensing component 500 is provided above the protective sleeve 300. During dispensing, glue is injected into the dispensing shell 400 to cover the measuring tube 100. When the glue level exceeds the protective sleeve 300, the glue is introduced into the glue inlet 310 of the protective sleeve 300 through the auxiliary dispensing component 500. After the colloid 410 is cured, the dispensing shell 400 is removed.

[0070] The structural diagram during glue injection is shown below. Figure 7 As shown, the glue injection shell 400 is placed on the measuring tube 100 to form a cavity formed by the glue 410.

[0071] By setting a glue-injection shell 400 fitted over the measuring tube 100 and an auxiliary glue-injection component 500 above the protective sleeve 300, the entire measuring tube 100 can be covered and the internal cavity of the protective sleeve 300 can be filled simultaneously by injecting glue into the glue-injection shell 400 in one operation. This eliminates the need for a complex two-step, inside-out glue-injection process, significantly reducing production steps, operational difficulty, and working time. Because the glue inside the glue-injection shell 400 completely covers the measuring tube 100, it forms an effective damping layer that absorbs and attenuates vibrations from the pipe, preventing vibrations from being transmitted to the protective sleeve 300 and the internal piezoelectric element 200. Simultaneously, the auxiliary glue-injection component 500 guides the glue in the glue-injection shell 400, ensuring that the glue flows orderly into the glue inlet 310 of the protective sleeve 300, resulting in a uniform and stable flow of glue into the glue-injection port of the protective sleeve 300.

[0072] Please see Figure 3 and Figure 4 The auxiliary dispensing component 500 includes an annular cover 510, which covers the top of the protective sleeve 300; the side wall of the annular cover 510 has a notch 520; a guide plate 530 is provided in the notch 520; the inlet of the guide plate 530 communicates with the inner cavity of the dispensing shell 400, and the outlet of the guide plate 530 communicates with the dispensing port 310 of the protective sleeve 300.

[0073] The adhesive is guided in an orderly manner using the guide plate 530 (guided direction as follows). Figure 3As shown in F3, the adhesive flows into the glue inlet 310 of the protective sleeve 300 in an orderly manner, avoiding collisions between adhesives, thereby ensuring that the adhesive enters the glue inlet 310 evenly and improving the integrity and stability of the piezoelectric element 200.

[0074] Please see Figure 3 and Figure 4 The top of the annular cover 510 has a fan-shaped opening 540 along its circumference; during ultraviolet curing, light enters the glue inlet 310 through the fan-shaped opening 540. Ultraviolet curing allows light to directly enter the glue inlet 310, facilitating rapid and uniform curing of the adhesive inside the protective sleeve 300, thus improving curing efficiency and quality.

[0075] Please see Figure 4 and Figure 5 The annular cover 510 has a notch 520 in the middle, and a pressing block 550 extends downward along the side wall of the notch 520; the annular cover 510 is elastically connected to the top of the protective sleeve 300 by a return spring 560; after the glue inlet 310 is filled with glue, it is pressed by external force (pressing direction as follows) Figure 5 As shown in Figure F2, the annular cap 510 is used to compact the glue in the glue inlet 310 by means of the extrusion block 550. After the glue fills the glue inlet 310, the glue can be compacted by pressing the annular cap 510 with external force to eliminate air bubbles or gaps and enhance the density and fixing effect of the glue.

[0076] It should be noted that the lower end of the extrusion block 550 extends into the glue inlet 310; and the outer wall of the extrusion block 550 is in contact with the inner wall of the glue inlet 310. This contact ensures that the extrusion block 550 can fully contact the glue during pressing, improving compaction uniformity and preventing glue residue or loosening. Furthermore, it guides the downward pressing of the annular cap 510.

[0077] Please see Figure 4 and Figure 5 The guide plate 530 is rotatably disposed within the notch 520; during flow guidance, the guide plate 530 is in contact with the top of the protective sleeve 300, such as... Figure 4 As shown; when an external force presses down on the annular cover 510, it simultaneously causes the guide plate 530 to flip upwards, closing the notch 520 and preventing the glue inside the glue injection shell 400 from flowing back into the protective sleeve 300, as... Figure 5 As shown.

[0078] By rotating the guide plate 530, the flow of glue can be automatically cut off after the protective sleeve 300 is filled with glue, preventing excessive glue from entering the protective sleeve 300 and avoiding waste and overfilling.

[0079] Please see Figure 4 The sidewall of the notch 520 is provided with a first positioning hole 521 and a second positioning hole 522; the sidewall of the guide plate 530 is provided with a positioning protrusion; during flow guidance, the positioning protrusion engages with the first positioning hole 521; when the annular cover 510 is pressed by external force, the guide plate 530 is flipped upward to close the notch 520, and at the same time, the positioning protrusion engages with the second positioning hole 522.

[0080] The positioning protrusion, in conjunction with the first positioning hole 521 and the second positioning hole 522, ensures that the guide plate 530 is accurately positioned in both the guiding and closed positions.

[0081] Please continue reading. Figure 3 The top of the guide plate 530 is provided with a guide channel; and the cross-sectional area of ​​the inlet of the guide plate 530 is larger than the cross-sectional area of ​​the outlet of the guide plate 530.

[0082] The cross-sectional area of ​​the inlet of the guide plate 530 is larger than the cross-sectional area of ​​the outlet of the guide plate 530. When the glue flows along the guide channel of the guide plate 530, the cross-sectional area of ​​the glue entering the injection port is reduced, thereby ensuring that the glue flows into the injection port of the protective sleeve 300 evenly and stably, and reducing the adhesion to the inner wall of the protective sleeve 300.

[0083] It should be noted that the protective sleeve 300 is T-shaped; the side wall of the measuring tube 100 is provided with an insertion hole adapted to the protective sleeve 300; wherein, the protective sleeve 300 is provided with a foolproof post and a snap-fit ​​block; the insertion hole and the snap-fit ​​block are provided with a snap-fit ​​groove.

[0084] Please see Figure 6 This disclosure also provides a glue injection method for the vortex flowmeter as described above. By setting a glue injection shell 400 sleeved outside the measuring tube 100 and an auxiliary glue injection component 500 above the protective sleeve 300, the entire measuring tube 100 can be covered and the internal cavity of the protective sleeve 300 can be filled simultaneously by injecting glue into the glue injection shell 400 in one operation. This eliminates the need for a complex two-step, inside-out glue injection process, significantly reducing production steps, operational difficulty, and working time. Because the glue inside the glue injection shell 400 completely covers the measuring tube 100, forming an effective damping layer, it can absorb and attenuate vibrations from the pipe, preventing vibrations from being transmitted to the protective sleeve 300 and the internal piezoelectric element 200. Simultaneously, the auxiliary glue injection component 500 guides the glue in the glue injection shell 400 that has submerged the protective sleeve 300, allowing the glue to enter the glue inlet 310 of the protective sleeve 300 in an orderly manner, ensuring a uniform and stable flow of glue into the glue injection port of the protective sleeve 300.

[0085] Specifically, the glue injection method includes:

[0086] S110: Place the piezoelectric element 200 into the protective sleeve 300.

[0087] S120: Inject the glue into the glue injection shell 400.

[0088] S130: The glue, which is higher than the protective sleeve 300, is introduced into the glue inlet 310 of the protective sleeve 300 through the auxiliary glue injection part 500.

[0089] S140: The adhesive inside the protective case 300 is cured by an external curing light source.

[0090] S150: Then, the glue inside the injection shell 400 is cured by an external light source to form colloid 410.

[0091] In summary, this invention provides a vortex flowmeter and its glue injection method. By setting a glue injection shell 400 sleeved outside the measuring tube 100 and an auxiliary glue injection component 500 above the protective sleeve 300, the entire measuring tube 100 can be covered and the internal cavity of the protective sleeve 300 can be filled simultaneously by injecting glue into the glue injection shell 400 in one operation. This eliminates the need for a complex two-step, inside-out glue injection process, significantly reducing production steps, operational difficulty, and working time. Because the glue inside the glue injection shell 400 completely covers the measuring tube 100, it forms an effective damping layer that can absorb and attenuate vibrations from the pipeline, preventing vibrations from being transmitted to the protective sleeve 300 and the internal piezoelectric element 200. Simultaneously, the auxiliary glue injection component 500 guides the glue in the glue injection shell 400, which is submerged above the protective sleeve 300, allowing the glue to enter the glue inlet 310 of the protective sleeve 300 in an orderly manner, ensuring a uniform and stable flow of glue into the glue injection port of the protective sleeve 300.

[0092] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0093] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0094] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0095] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0096] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A vortex flow meter, characterized in that, include: The measuring tube (100) has a vortex generating column (110) inside. A piezoelectric element (200) is disposed inside the measuring tube (100) and located behind the vortex generating column (110) in the direction of liquid inflow; A protective sleeve (300) penetrates the side wall of the measuring tube (100), and the piezoelectric element (200) is disposed inside the protective sleeve (300); The colloid (410) is formed by injection through the injection shell (400). During injection, the injection shell (400) is sleeved on the measuring tube (100), and the protective sleeve (300) is disposed inside the injection shell (400). The inlet (310) of the protective sleeve (300) is disposed near the top of the injection shell (400). A housing (600) is fitted over the colloid (410) and is used to encapsulate the colloid (410); An auxiliary adhesive injection component (500) is provided above the protective sleeve (300). During glue injection, glue is injected into the glue injection shell (400) to cover the measuring tube (100). When the glue level is above the protective sleeve (300), the glue is introduced into the glue inlet (310) of the protective sleeve (300) through the auxiliary glue injection component (500). After the glue is cured to form a glue body (410), the glue injection shell (400) is removed by external force. The auxiliary dispensing component (500) includes an annular cap (510) that covers the top of the protective sleeve (300); The annular cover (510) has a notch (520) on its side wall. A guide plate (530) is provided inside the notch (520); The inlet of the guide plate (530) is connected to the inner cavity of the glue injection shell (400), and the outlet of the guide plate (530) is connected to the glue inlet (310) of the protective sleeve (300). The top of the annular cover (510) is provided with a fan-shaped opening (540) along the circumferential direction. During UV curing, light enters the glue inlet (310) through the fan-shaped opening (540).

2. The vortex flow meter as described in claim 1, characterized in that, The annular cover (510) has a notch (520) in the middle, and an extrusion block (550) extends downward along the side wall of the notch (520). The annular cover (510) is elastically connected to the top of the protective sleeve (300) by a return spring (560); After the glue inlet (310) is filled with glue, the annular cover (510) is pressed by external force to compact the glue inlet (310) through the extrusion block (550).

3. The vortex flow meter as described in claim 2, characterized in that, The lower end of the extrusion block (550) extends into the glue inlet (310); Furthermore, the outer wall of the extrusion block (550) is in contact with the inner wall of the glue inlet (310).

4. The vortex flow meter as described in claim 2, characterized in that, The guide plate (530) is rotatably disposed within the notch (520); During the flow diversion process, the flow diverter (530) is in contact with the top of the protective sleeve (300); When the annular cover (510) is pressed down by an external force, the guide plate (530) is flipped upward to close the notch (520) and prevent the glue in the glue injection shell (400) from flowing back into the protective sleeve (300).

5. The vortex flow meter as described in claim 4, characterized in that, The sidewall of the notch (520) is provided with a first positioning hole (521) and a second positioning hole (522). The side wall of the guide plate (530) is provided with positioning protrusions; During the flow diversion, the positioning protrusion engages with the first positioning hole (521); When the annular cover (510) is pressed by an external force, the guide plate (530) is flipped upward to close the notch (520). At the same time, the positioning protrusion engages with the second positioning hole (522).

6. The vortex flow meter as described in claim 1, characterized in that, The top of the guide plate (530) is provided with a guide channel; Furthermore, the cross-sectional area of ​​the inlet of the guide plate (530) is greater than the cross-sectional area of ​​the outlet of the guide plate (530).

7. The vortex flow meter as described in claim 1, characterized in that, The protective sleeve (300) is T-shaped; The side wall of the measuring tube (100) is provided with an insertion hole that is compatible with the protective sleeve (300); The protective sleeve (300) is provided with anti-fooling posts and snap-fit ​​blocks; The insertion hole and the adapter of the snap-fit ​​block are provided with snap-fit ​​grooves.

8. A method for dispensing adhesive into a vortex flow meter as described in any one of claims 1-7, characterized in that, The adhesive injection method includes: Place the piezoelectric element (200) into the protective sleeve (300); Inject the glue into the glue-filling housing (400); The glue, which is higher than the protective sleeve (300), is introduced into the glue inlet (310) of the protective sleeve (300) through the auxiliary glue injection part (500); The adhesive inside the protective sleeve (300) is cured by an external curing light source; Then, the glue inside the injection shell (400) is cured by an external light source to form a colloid (410).

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