Precession flow meter with central pressure tapping structure

Abstract

The invention provides a precession flowmeter with a central pressure tapping structure, and belongs to the field of precession flowmeters.The precession flowmeter comprises a precession flowmeter body, the precession flowmeter body comprises a pipeline part and a sensor part formed on the outer side of the pipeline part, and one side, facing one end of the pipeline part, of the sensor part is at least provided with a line connecting end; a covering frame capable of covering at least three surfaces of the outer side of the sensor part is arranged outside the sensor part, and a line adjusting part used for increasing wiring bending space is arranged on the covering frame. According to the precession flow meter, the sensor part can be covered through the covering frame when the precession flow meter is in a horizontal state, a vertical state and an inclined state, and the covering application range is wider. According to the circuit adjusting assembly, when the covering frame protects and shields the sensor part on the precession flow meter, a connecting circuit extending outwards from the sensor part cannot be blocked by the covering frame to be bent by a too small angle, and the service life of the connecting circuit can be prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of swirl flowmeters, in particular to a swirl flowmeter with a central pressure taking structure. Background Art

[0002] Vortex flowmeters are widely used in the petroleum, chemical, electric power, metallurgy, urban gas supply and other industries to measure the flow of various gases. They are currently the preferred product for oil field and urban natural gas transmission and distribution measurement and trade measurement.

[0003] In actual use, the swirl flowmeter may be arranged for use outdoors. When installed and used outdoors, the top of the swirl flowmeter is required to be covered to avoid exposure to the sun and rain erosion, which will affect the service life of the instrument.

[0004] Some existing swirl flowmeters are equipped with a cover on the top to protect them from exposure to the sun and erosion by rain, without the need for companies to arrange additional external shielding. However, this built-in cover structure can only protect the sensor part at the top when the pipe part of the swirl flowmeter is at a horizontal angle. When the pipe part of the swirl flowmeter is at an inclined or vertical angle, the top cover can no longer cover the sensor part, which limits the use scenarios of this type of structure.

[0005] Therefore, we propose a swirl flowmeter with a central pressure-taking structure to solve the above problems. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a swirl flowmeter with a central pressure-taking structure to solve the problems raised in the above-mentioned background technology.

[0007] The objectives of the present invention can be achieved through the following technical solution: it includes a swirl flowmeter body, the swirl flowmeter body includes a pipeline portion and a sensor portion formed on the outside of the pipeline portion, one of the sides of the sensor portion facing one end of the pipeline portion is provided with at least a line connection end, a cover frame is provided outside the sensor portion that can shield at least three sides of the outside of the sensor portion, a line adjustment component for increasing the wiring bending space is provided on the cover frame, and a leak-proof component for preventing water seepage is also provided on the line adjustment component.

[0008] According to an embodiment of the present invention, the line adjustment component includes an adjustment space located between the line connection end and the adjacent surface of the cover frame, and the adjustment space can make the bending part of the external line connected to the sensor part form an obtuse angle of not less than 120 degrees.

[0009] According to one embodiment of the present invention, the leakage-proof component includes a positioning card portion formed on the cover frame near the line connection end, the positioning card portion includes a first cavity with an arc-shaped recessed cross-section, and a fixed card block is detachably connected to the outside of the positioning card portion, and the fixed card block also has a second cavity portion adapted to the shape of the first cavity.

[0010] According to one embodiment of the present invention, an arc-shaped guide portion is formed on a side of the fixed block away from the second cavity portion. The arc-shaped guide portion can guide water droplets that pass over one side of the fixed block from the wire to an inclined angle, so that the water droplets fall off from one end of the arc-shaped guide portion under the action of gravity.

[0011] According to one embodiment of the present invention, the line adjustment component includes a through hole formed on a cover frame on a side close to the line connection end, and the leakage prevention component includes a first sealing member with a detachable connection provided therein, the first sealing member includes two mirror-symmetrical first sealing petals, and the first sealing member is formed with a second channel allowing the line connected to the line connection end to pass through.

[0012] According to one embodiment of the present invention, an arc-shaped guide frame is formed on the cover frame near the through hole, the first sealing member has a first outer blocking portion adapted to the inner diameter of the arc-shaped guide frame, a first locking member is provided between the two first sealing petals, and the first locking member passes through the two first sealing petals and passes through the first outer blocking portion at least once at the same time.

[0013] According to one embodiment of the present invention, the line adjustment component includes a guide tube formed on the outer side of the cover frame near the line connection end, the guide tube is formed with a bending section with a bending angle of not less than degrees, and an opening is formed at a corresponding position on the cover frame. The leakage-proof component includes a second sealing piece sealed at the opening on the outer side of the guide tube, and a third channel allowing the wire to pass through is formed in the second sealing piece.

[0014] According to one embodiment of the present invention, a first outer edge having an outer diameter larger than an opening at one end of the guide tube is formed on the second sealing member, and the second sealing member also includes two mirror-symmetrical second sealing petals, which are sealed and detachably arranged at the opening at one end of the guide tube.

[0015] According to one embodiment of the present invention, the line adjustment component includes a groove body formed on the cover frame near the side of the line connection end, and the lower edge of the groove body completely passes through the bottom plane of the cover frame. The leakage prevention component includes a third sealing member sealed in the groove body, and the third sealing member is also formed with a fourth channel for facilitating the passage of the wire and a second outer edge for limiting the third sealing member from continuing to penetrate deeper into the groove body.

[0016] According to one embodiment of the present invention, the third sealing member also includes two mirror-symmetrical third sealing petals, and abutment portions are formed on symmetrical sides of the bottom end of the groove body, and abutment grooves are formed at corresponding positions on the third sealing petals. A second outer blocking portion guided along the outer contour of the groove body is provided on the covering frame outside the groove body, and a second cylindrical hole is formed on the second outer blocking portion and the third sealing petal. A second locking member is provided in the second cylindrical hole, and the second locking member can be detachably installed in the second cylindrical hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The covering frame can protect and cover the sensor part when the swirl flowmeter is in a horizontal, vertical and inclined state, and the application range of covering and protection is wider.

[0019] 2. The line adjustment component can prevent the connecting line extending outward from the sensor part from being blocked by the cover frame and causing bending at too small an angle when the cover frame is used to protect and block the sensor part of the rotary flowmeter, thereby protecting the service life of the connecting line.

[0020] 3. The anti-leakage component can circumvent the problem of leakage caused by the cover frame due to the installation of the line adjustment component on the basis of the line adjustment component, and can further improve the shielding and protection effect of the cover frame on the sensor part of the swirl flowmeter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention;

[0023] Figure 2 yes Figure 1 An enlarged schematic diagram of part A is shown;

[0024] Figure 3 It is a front structural diagram of the first embodiment of the present invention;

[0025] Figure 4 It is a partially enlarged structural diagram of the first embodiment of the present invention;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the second embodiment of the present invention;

[0027] Figure 6 It is a partially enlarged structural diagram of the second embodiment of the present invention;

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the third embodiment of the present invention;

[0029] Figure 8 It is a partially enlarged structural diagram of the third embodiment of the present invention;

[0030] Figure 9 is a schematic diagram of the three-dimensional structure of the fourth embodiment of the present invention;

[0031] Figure 10 It is a partially enlarged structural diagram of the fourth embodiment of the present invention.

[0032] In the figure: 1. Swirl flowmeter body; 11. Pipe part; 12. Sensor part; 13. Line connection end; 2. Cover frame; 21. Inclined surface; 22. Second connection end; 3. Line adjustment component; 31a. Adjustment space; 31b. Through hole; 31c. Guide pipe; 311c. Bend section; 32c. Opening; 31d. Slot; 4. Leakage-proof component; 41a. Positioning clamp; 42a. First cavity; 43a. Fixing block; 44a. Second cavity; 45a. Connecting protrusion; 46a. Arc-shaped guide; 41b. First blocking member; 42b. Second channel; 43b. First blocking petal; 431b. First locking member; 44 b, arc-shaped guide frame; 45b, first outer stopper; 46b, first cylindrical hole; 41c, second blocking member; 42c, third channel; 43c, first outer edge; 44c, second blocking petal; 41d, third blocking member; 42d, fourth channel; 43d, second outer edge; 44d, third blocking petal; 45d, stopper; 46d, stopper groove; 47d, second outer stopper; 48d, second cylindrical hole; 49d, second locking member; 5, connecting structure; 51, first connecting end; 511, special-shaped plug hole; 512, plug rod connecting portion; 52, rod; 521, limiting protruding ring; 53, first clamping member; 54, second clamping member. DETAILED DESCRIPTION

[0033] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the context of this disclosure, "a group" means two or more, unless otherwise specifically defined.

[0035] Throughout this specification, when a device is said to be "connected" to another device, this includes not only "direct connection" but also "indirect connection" with other elements interposed therebetween. Furthermore, when a device is said to "include" a certain component, unless otherwise stated, this does not exclude the inclusion of other components but rather implies that the device may include other components.

[0036] Although the terms first, second, etc. are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first interface and a second interface, etc. are represented. Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context indicates otherwise.

[0037] Although not defined differently, all terms used herein, including technical and scientific terms, have the same meanings as those generally understood by those skilled in the art to which this disclosure belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with relevant technical literature and the current message. Unless otherwise defined, they should not be overly interpreted as ideal or highly formalized meanings.

[0038] In actual use, the swirl flowmeter may be arranged for use outdoors. When installed and used outdoors, the top of the swirl flowmeter is required to be covered to avoid exposure to the sun and rain erosion, which will affect the service life of the instrument. In general, some companies arrange additional structures with covers to save trouble or it is inconvenient to arrange them at the actual installation site, which makes some outdoor swirl flowmeters naked. In order to compensate for this problem, a structure with a top cover is directly provided on the swirl flowmeter, which can effectively simplify the volume of the cover and provide shielding and protection for the swirl flowmeter. However, this type of cover structure only considers the situation where the swirl flowmeter is in a horizontal arrangement, and the cover can only be installed when the pipe part of the swirl flowmeter is in a horizontal arrangement. When the swirl flowmeter is installed at an angle, the sensor part is protected at the top, and when the tube in the swirl flowmeter is at an inclined or vertical angle, the top cover can no longer cover the sensor part, which limits the use scenarios of this type of structure. In order to further solve the problem that the cover can cover the sensor part when the swirl flowmeter is installed in different orientations, the cover is required to have at least three covering surfaces. Since the sensor part needs to extend outward for wiring, one of the two covering surfaces of the cover located on both sides of the sensor part symmetrically will block the wiring line. If the covering surface is too close to the wiring terminal, the line will need to make a bend of nearly ninety degrees at this location. The wiring is prone to damage at this angle for a long time, and its service life is reduced.

[0039] See also Figures 1-10 As shown, a swirl flowmeter with a central pressure-taking structure includes a swirl flowmeter body 1, which includes a pipe portion 11 and a sensor portion 12 formed on the outside of the pipe portion 11. The sensor portion 12 can take pressure at the center of the pipe portion 11 to obtain a pressure signal at the center of the fluid. At least one line connection end 13 is provided on one side of the sensor portion 12 facing one end of the pipe portion 11. A cover frame 2 is provided outside the sensor portion 12 to shield at least three sides of the outside of the sensor portion 12. A line adjustment component 3 for increasing the wiring bending space is provided on the cover frame 2. A leak-proof component 4 for preventing water seepage is also provided on the line adjustment component 3.

[0040] Preferably, the bottoms of the two symmetrical sides of the cover frame 2 are inclined outward, forming two opposite inclined surfaces 21 on the outside of the sensor part 12. The inclined surfaces 21 can prevent water from accumulating on the top of the swirl flowmeter when it is in a vertical installation angle. Furthermore, in order to avoid water from accumulating on one side of the top of the swirl flowmeter when it is arranged horizontally, the entire structure of the cover frame 2 can be tilted forward / backward at a certain angle so that no matter what the arrangement is, the water on the outside of the cover frame 2 can be easily lost.

[0041] Preferably, a connecting structure 5 for mounting the covering frame 2 is provided on the pipe portion 11 .

[0042] As a variant, the connecting structure 5 may also be provided on the sensor portion 12 .

[0043] Preferably, the connecting structure 5 includes a first connecting end 51 formed on the pipe portion 11, a rod 52 is inserted into the first connecting end 51, and a first clamping member 53 is detachably provided on the outside of the first connecting end 51. The first clamping member 53 is used to restrict the rod 52 in the first connecting end 51 so that it cannot fall out. Exemplarily, the first clamping member 53 can be threadedly connected to the outside of the first connecting end 51, and a second connecting end 22 is formed on the cover frame 2, and the second connecting end 22 is detachably connected to the outside of the rod 52.

[0044] For example, a special-shaped socket 511 is formed in the first connecting end 51, and a corresponding adaptive rod connecting portion 512 is formed on the rod 52. By inserting the rod connecting portion 512 into the special-shaped socket 511, the rotation of the rod 52 in the first connecting end 51 can be limited to facilitate positioning of the rod 52. Similarly, the second connecting end 22 is inserted on the outside of the rod 52.

[0045] Furthermore, a limiting protrusion 521 is formed at the outer end of the rod 52 , and the limiting protrusion 521 is used to limit the insertion depth of the second connecting end 22 .

[0046] Exemplarily, a thread is provided on the outer side of one end of the rod 52 close to the second connecting end 22. After the second connecting end 22 is inserted into the outside of the rod 52, a second clamping member 54 is also threadedly connected to the outer side of the rod 52. The second clamping member 54 is implemented as a nut.

[0047] Those skilled in the art will appreciate that, when installing the cover frame 2, the first pressing member 53 is first removed from the outside of the first connecting end 51, one end of the rod 52 is inserted into the first connecting end 51 to the lowest point, and then the first pressing member 53 that was previously removed is reconnected to the outside of the first connecting end 51 until it presses one end of the rod 52, and then the second connecting end 22 of the cover frame 2 with the second connecting end 22 is aligned with the rod 52 and inserted, and then the second pressing member 54 is fixed to the outside of the rod 52 so that the second connecting end 22 cannot fall off from the rod 52, thereby completing the installation process of the cover frame 2.

[0048] In the first embodiment of the present invention, the line adjustment component 3 includes an adjustment space 31a located between the line connection end 13 and the adjacent surface of the cover frame 2. The adjustment space 31a allows the external line connected to the sensor part 12 to be bent at an obtuse angle of not less than 120 degrees.

[0049] Preferably, the leakage-proof component 4 includes a positioning card portion 41a formed on the cover frame 2 near the line connection end 13, the positioning card portion 41a includes a first cavity 42a with an arc-shaped concave cross-section, and a fixed card block 43a is detachably connected to the outside of the positioning card portion 41a. The fixed card block 43a also has a second cavity portion 44a that is adapted to the shape of the first cavity 42a. The first cavity 42a and the second cavity portion 44a are combined to form a first channel for the connection line of the line connection end 13 to pass through. An arc-shaped guide portion 46a is formed on the side of the fixed card block 43a away from the second cavity portion 44a. The arc-shaped guide portion 46a can guide water droplets that pass over one side of the fixed card block 43a on the wire to an inclined angle, so that Under the action of gravity, it detaches from one end of the arc-shaped guide portion 46a to prevent rainwater from further flowing on the wire. The positioning card portion 41a and the fixed card block 43a can cooperate to fix the distribution line connection end 13 to the fixed position on the cover frame 2 to prevent rainwater from entering the cover frame 2 along the direction of the wire and causing leakage. Fixing the line in a fixed position on the cover frame 2 is conducive to arranging a special protective structure on the outside of the line. For example, the fixed card block 43a and the positioning card portion 41a can both extend connecting protrusions 45a for connection to both sides symmetrically. By arranging locking bolts on the two connecting protrusions 45a, the positioning card portion 41a and the fixed card block 43a can be connected and disassembled.

[0050] Furthermore, in order to improve the sealing degree of the line in the channel, arc-shaped sealing rings are provided on the inner wall surfaces of the first cavity 42a and the second cavity portion 44a. For example, the arc-shaped sealing rings can be supported by silicone material to increase the sealing effect of the first cavity 42a and the second cavity portion 44a in pressing the adapter line connection end 13 connected thereto, so as to avoid that when the side of the cover frame 2 close to the line connection end 13 is installed at an inclined upward angle, rainwater on rainy days will slide along the line exposed outside the cover frame 2 into the line connection end 13, so as to avoid the problem of rain seepage.

[0051] Those skilled in the art will appreciate that, by adding the additional adjustment space 31a, the external circuit connected to the circuit connection end 13 can have enough space here to produce a suitable bending angle, so as to avoid it being in a nearly acute angle bending state for a long time and breaking during use, thereby weakening the protective effect of the outer rubber on the internal circuit. At the same time, by fixing the circuit that produces a suitable bending angle at a suitable position on the cover frame 2, it can be avoided that when it is installed at a special angle, the circuit in a tilted state will not become a guide line for rainwater, and the rainwater will be guided into the cover frame 2, thereby ensuring the protective effect of the cover frame 2 on the sensor part 12 on rainy days.

[0052] In a second embodiment of the present invention, the line adjustment component 3 includes a through hole 31b formed on the cover frame 2 on a side near the line connection end 13. The through hole 31b allows the line connected to the line connection end 13 to pass directly through the cover frame 2, causing it to bend within the cover frame 2, thereby preventing the narrow space between the cover frame 2 and the line connection end 13 from hindering the bending of the line.

[0053] Preferably, the leakage-proof component 4 includes a first blocking piece 41b detachably connected therein, and a second channel 42b is formed in the first blocking piece 41b for allowing the line connected to the line connection end 13 to pass through.

[0054] Furthermore, the first blocking member 41b includes two mirror-symmetrical first blocking petals 43b. The split design can facilitate the first blocking member 41b to carry the wire and be installed in the through hole 31b, thereby simplifying the installation operation.

[0055] Furthermore, an arc-shaped guide frame 44b is formed on the cover frame 2 near the through hole 31b, and the first sealing member 41b has a first outer blocking portion 45b adapted to the inner diameter of the arc-shaped guide frame 44b. The arc-shaped guide frame 44b is arranged coaxially with the through hole 31b. The arc-shaped guide frame 44b can slide the water falling into the outside along the arc direction to both sides when the cover frame 2 is in a certain angle range, such as when it is arranged horizontally, and at the same time block and seal the contact gap between the first sealing member 41b and the cover frame 2 to prevent rainwater from seeping in from there on rainy days. The through hole 31b added to facilitate line bending can be effectively sealed to avoid leakage there.

[0056] Furthermore, a first locking piece 431b is provided between the two first sealing petals 43b. Exemplarily, the first locking piece 431b is a cylindrical pin that passes through the two first sealing petals 43b and at least once through the first outer blocking portion 45b. First cylindrical holes 46b for allowing the cylindrical pin to pass through are respectively formed on the first sealing petal 43b and the first outer blocking portion 45b. There is an interference fit between the first cylindrical hole 46b and the cylindrical pin. After the cylindrical pin completely passes through the first cylindrical hole 46b, one end face of the cylindrical pin is exposed outside the cylindrical hole by at least 6 mm. Anti-slip grooves are provided around the outer sides of both ends of the cylindrical pin.

[0057] Those skilled in the art will appreciate that, by passing one end of the line connected to the line connection end 13 through the through-hole 31b after the line is connected to the line connection end 13, then merging the two first blocking petals 43b on the outside of the line, inserting the merged first blocking member 41b into the through-hole 31b, and finally passing the first locking member 431b through the first outer blocking portion 45b and the first blocking member 41b to create a connection relationship between them, the possibility of the first blocking member 41b being detached from the through-hole 31b under the action of natural force can be reduced.

[0058] In a third embodiment of the present invention, the line adjustment component 3 includes a guide tube 31c formed on the outer side of the cover frame 2 near the line connection end 13. The guide tube 31c has a bent section 311c with a bending angle of not less than 120 degrees. An opening 32c is formed at a corresponding position on the cover frame 2. The line connected to the line connection end 13 can pass through the cover frame 2 through the opening 32c and the guide tube 31c. The bent section 311c allows the line to generate a certain bending angle therein.

[0059] Preferably, the leakage-proof component 4 includes a second blocking piece 41c sealed at the outer opening of the guide tube 31c. A third channel 42c allowing the wire to pass through is formed in the second blocking piece 41c. The line connected to the line connection end 13 passes through the third channel 42c and extends outward.

[0060] Furthermore, a first outer edge 43c having an outer diameter larger than the opening at one end of the guide tube 31c is formed on the second blocking member 41c.

[0061] Furthermore, the second sealing member 41c also includes two mirror-symmetrical second sealing petals 44c, and the second sealing petal 44c can be sealed and detachably arranged at the opening of one end of the guide tube 31c. Exemplarily, the second sealing petal 44c is made of rubber material. Furthermore, a plurality of convex rings are provided on the outside of the second sealing petal 44c. Further, the maximum outer diameter of the convex ring in the extended state is greater than the inner diameter of the inner opening of the guide tube 31c. In summary, the rubber material can facilitate the second sealing petal 44c to produce a certain deformation during installation, and the opening of the guide tube 31c is well sealed through extrusion deformation. A plurality of convex rings can further increase its deformation amount and improve its sealing effect.

[0062] Those skilled in the art will appreciate that by extending the line connected to the line connection end 13 outward from the cover frame 2 along the opening 32c and the guide tube 31c, and then placing the two second sealing petals 44c tightly against the outside of the wire extending outward from one end of the guide tube 31c, sliding along the direction of the wire to the opening close to the guide tube 31c, and pressing inward with force, the second sealing petals 44c are completely pressed into the opening at one end of the guide tube 31c, thereby completing the sealing of the guide tube 31c.

[0063] In a fourth embodiment of the present invention, the line adjustment component 3 includes a groove 31d formed on the cover frame 2 near the line connection end 13. The lower edge of the groove 31d completely penetrates the bottom plane of the cover frame 2. The line connected to the line connection end 13 can pass through the cover frame 2 through the groove 31d inside the cover frame 2. In this embodiment, since the lower end of the groove 31d is completely exposed, the operation of pulling out the wire will be more convenient. There is no need to insert it into a corresponding hole and then pull it out, which saves a certain step.

[0064] Preferably, the leakage-proof component 4 includes a third sealing member 41d sealed in the groove body 31d, and the third sealing member 41d also has a fourth channel 42d for the wire to pass through and a second outer edge 43d that limits the third sealing member 41d from further penetrating into the groove body 31d.

[0065] Furthermore, in order to facilitate the installation of the third blocking member 41d, the third blocking member 41d also includes two mirror-symmetrical third blocking petals 44d.

[0066] Furthermore, abutment portions 45d are formed symmetrically on both sides of the bottom end of the groove body 31d, and abutment grooves 46d are formed at corresponding positions on the third blocking petal 44d. The blocking portions 45d and the blocking grooves 46d interfere with each other, thereby preventing the third blocking member 41d from detaching from the groove body 31d downward along the lower end opening of the groove body 31d.

[0067] Furthermore, a second outer stop 47d guided along the outer contour of the trough body 31d is provided on the cover frame 2 outside the trough body 31d, and a second cylindrical hole 48d is formed on the second outer stop 47d and the third blocking petal 44d. A second locking piece 49d is provided in the second cylindrical hole 48d, and the second locking piece 49d is detachably installed in the second cylindrical hole 48d. For example, the second locking piece 49d also adopts a cylindrical pin, and an interference fit is adopted between the cylindrical pin and the second cylindrical hole 48d. The third blocking petal 44d and the second outer stop 47d are inserted through the second locking piece 49d, which can further avoid the possibility of the third blocking piece 41d detaching from the trough body 31d, thereby improving the stability after installation.

[0068] Those skilled in the art will appreciate that by extending the line connected to the line connection end 13 outward from the inside of the cover frame 2 along the groove body 31d, the line can be easily adjusted to bend on the outside of the cover frame 2, and then the two third blocking petals 44d are merged on the outside of the line, and the line is slid along the direction of the line and driven to pass through the groove body 31d until the third blocking petal 44d is inserted into the groove body 31d, and then the second locking piece 49d is passed through the second cylindrical hole 48d and inserted tightly, so that the third blocking petal 44d is difficult to detach from the groove body 31d.

[0069] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A swirl flowmeter with a central pressure sampling structure, comprising a swirl flowmeter body (1), the swirl flowmeter body (1) comprising a pipeline portion (11) and a sensor portion (12) formed outside the pipeline portion (11), wherein one side of the sensor portion (12) facing one end of the pipeline portion (11) is provided with at least a line connection end (13), characterized in that: A covering frame (2) is provided outside the sensor part (12) and can shield at least three outer sides of the sensor part (12); a line adjustment component (3) for increasing the wiring bending space is provided on the covering frame (2); and a leak-proof component (4) for preventing water seepage is also provided on the line adjustment component (3).

2. The swirl flowmeter with a central pressure measurement structure according to claim 1, characterized in that: The circuit adjustment component (3) includes an adjustment space (31a) located between the circuit connection end (13) and the adjacent surface of the cover frame (2). The adjustment space (31a) can form an obtuse angle of not less than 120 degrees at the bending portion of the external circuit connected to the sensor part (12).

3. The swirl flowmeter with a central pressure measurement structure according to claim 2, characterized in that: The leak-proof component (4) includes a positioning card portion (41a) formed on the cover frame (2) near the line connection end (13), the positioning card portion (41a) including a first cavity (42a) with an arc-shaped concave cross-section, a fixed card block (43a) detachably connected to the outside of the positioning card portion (41a), and the fixed card block (43a) also has a second cavity portion (44a) adapted to the shape of the first cavity (42a).

4. The swirl flowmeter with a central pressure measurement structure according to claim 3, characterized in that: An arc-shaped guide portion (46a) is formed on a side of the fixed block (43a) away from the second cavity portion (44a). The arc-shaped guide portion (46a) can guide water drops from the wire over one side of the fixed block (43a) to an inclined angle, so that the water drops are separated from one end of the arc-shaped guide portion (46a) under the action of gravity.

5. The swirl flowmeter with a central pressure measurement structure according to claim 1, characterized in that: The line adjustment component (3) includes a through hole (31b) formed on a cover frame (2) on a side close to the line connection end (13); the leakage prevention component (4) includes a first blocking piece (41b) provided therein with a detachable connection; the first blocking piece (41b) includes two mirror-symmetrical first blocking petals (43b); and a second channel (42b) is formed in the first blocking piece (41b) for allowing a line connected to the line connection end (13) to pass through.

6. The swirl flowmeter with a central pressure measurement structure according to claim 5, characterized in that: An arc-shaped flow guide frame (44b) is formed on the cover frame (2) near the through hole (31b); the first blocking member (41b) has a first outer stopper (45b) adapted to the inner diameter of the arc-shaped flow guide frame (44b); a first locking member (431b) is provided between the two first blocking petals (43b); the first locking member (431b) penetrates the two first blocking petals (43b) and simultaneously penetrates the first outer stopper (45b) at least once.

7. The swirl flowmeter with a central pressure measurement structure according to claim 1, characterized in that: The line adjustment component (3) comprises a guide tube (31c) formed on the outer side of the cover frame (2) close to the line connection end (13); a curved section (311c) having a bending angle of not less than 0.5 degrees is formed on the guide tube (31c); an opening (32c) is formed at a corresponding position on the cover frame (2); and the leakage prevention component (4) comprises a second blocking member (41c) sealed at the outer opening of the guide tube (31c); a third channel (42c) allowing a wire to pass through is formed in the second blocking member (41c).

8. The swirl flowmeter with a central pressure measurement structure according to claim 7, characterized in that: The second sealing member (41c) is formed with a first outer edge (43c) having an outer diameter larger than the opening at one end of the guide tube (31c). The second sealing member (41c) also includes two mirror-symmetrical second sealing petals (44c). The second sealing petals (44c) are sealably and detachably arranged at the opening at one end of the guide tube (31c).

9. The swirl flowmeter with a central pressure measurement structure according to claim 1, characterized in that: The line adjustment component (3) includes a groove body (31d) formed on a side of the cover frame (2) close to the line connection end (13), the lower edge of the groove body (31d) completely passing through the bottom plane of the cover frame (2), and the leakage prevention component (4) includes a third blocking piece (41d) sealed in the groove body (31d), and the third blocking piece (41d) also has a fourth channel (42d) for facilitating the passage of the wire and a second outer edge (43d) for limiting the third blocking piece (41d) from further penetrating into the groove body (31d).

10. The swirl flowmeter with a central pressure measurement structure according to claim 9, characterized in that: The third blocking member (41d) also includes two mirror-symmetrical third blocking petals (44d), abutment portions (45d) are formed on two symmetrical sides of the bottom end of the groove body (31d), abutment grooves (46d) are formed at corresponding positions on the third blocking petals (44d), a second outer blocking portion (47d) guided along the outer contour of the groove body (31d) is provided on the cover frame (2) outside the groove body (31d), a second cylindrical hole (48d) is formed on the second outer blocking portion (47d) and the third blocking petal (44d), a second locking member (49d) is provided in the second cylindrical hole (48d), and the second locking member (49d) is detachably installed in the second cylindrical hole (48d).

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