Flow meter connecting structure

Abstract

The utility model discloses a flow meter connecting structure which comprises a top cover, a flow meter and a flow meter. A boss capable of penetrating into the through hole is arranged in the middle of the rotating disc; according to the connecting structure, the top cover and the rotating disc are adopted to form a mechanical connecting structure, the meter body on the lower portion and the correction instrument on the upper portion are connected, the connecting structure is in a pure mechanical type, the connecting structure is reliable in connection, and unless the top cover is damaged, the connecting structure can not be damaged, and the connecting structure can not be damaged. The top cover and the rotating disc are provided with the positioning protrusions and the guide grooves, large-angle relative rotation of the correction instrument is achieved, and checking, overhauling and maintaining are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas metering equipment, and in particular relates to a flow meter connection structure. Background Art

[0002] The ultrasonic flowmeter is a precision multi-channel gas ultrasonic flowmeter designed for measurement applications requiring high accuracy and reliability. It is mainly used for natural gas trade measurement, serving urban gas and industrial and commercial users. The upper part is connected to a corrector with integrated temperature and pressure correction function, which can convert the working volume flow measured by the flowmeter into the standard volume flow, such as Figure 1 shown.

[0003] After searching, the existing patent (publication number: CN210570874U) discloses a volume corrector, including a shell and a bracket, the bracket including an upper bracket fixedly connected to the shell and a lower bracket fixedly connected to the flow meter, an adjustment mechanism is provided between the upper bracket and the lower bracket, the adjustment mechanism includes a gear arranged on the upper bracket and a locking claw arranged on the lower bracket, the gear and the locking claw are engaged with each other, and the locking claw is provided with a driving part for releasing or restoring the engagement state between the locking claw and the gear. The volume corrector is fixed to the flow meter through the bracket. When the angle of the display screen of the corrector needs to be adjusted, the engagement between the locking claw and the gear is first released by the driving part, and the angle of the display screen of the volume corrector can be adjusted at this time.

[0004] As the applicant conducted further research, it was found that since the corrector of this technical solution is connected to the flow meter through a bracket, the connection structure between the two is composed of a stud and a spring sleeved on the outer circumference of the stud. The connection is released by pulling the stud to move, and under the action of the spring to restore, the stud moves in the opposite direction to connect the two. During the transportation and installation operation, the corrector is often used as a fulcrum to lift it up, but due to structural limitations, especially when the flow meter below has a large diameter and the meter body is heavy, the connection may fall off and be damaged, and the reliability of this connection method is relatively weak. Utility Model Content

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A flow meter connection structure, comprising:

[0007] A top cover, with a through hole formed at the upper end;

[0008] A rotating disk, with a boss at the middle portion that can penetrate into the through hole;

[0009] The top cover and the opposite side of the bottom of the rotating disk are provided with a guide groove and a positioning protrusion matched with the guide groove.

[0010] Furthermore, the guide groove is arc-shaped.

[0011] Furthermore, the curvature of the guide groove is not greater than 180 degrees.

[0012] Furthermore, the guide groove is provided on the rotating disk, and the positioning protrusion is provided on the top cover.

[0013] Furthermore, the guide groove is provided on the top cover, and the positioning protrusion is provided on the rotating disk.

[0014] Furthermore, a plurality of fastening holes are opened on the boss.

[0015] Furthermore, the cross section of the rotating disk is in an inverted T shape, and at least one layer of sealing grooves is provided on the peripheral wall of the boss.

[0016] Furthermore, the outer diameter of the rotating disk is larger than the aperture of the through hole.

[0017] Furthermore, the top cover is rectangular, and a threaded hole for connection with the flow meter body is provided at the upper end.

[0018] Furthermore, the inner wall of the guide groove has a lubricating coating.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This connection structure uses a top cover and a rotating disk to form a mechanical connection structure to connect the meter body below and the corrector on the top. Since this connection structure is purely mechanical, the connection is reliable unless the top cover is damaged. The positioning protrusions and guide grooves provided in the top cover and the rotating disk enable the corrector to rotate relative to each other at a large angle, which is convenient for inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the explosion structure of an embodiment of the utility model (viewing angle 1);

[0023] Figure 3 This is a schematic diagram of the explosion structure of an embodiment of the utility model (viewpoint 2);

[0024] Figure 4 This is a schematic diagram of the explosion structure of an embodiment of the utility model (viewing angle 3);

[0025] Figure 5 This is a schematic diagram of the partial structure of the connection structure of an embodiment of the utility model (viewing angle 1);

[0026] Figure 6 This is a schematic diagram of the partial structure of the connection structure of an embodiment of the utility model (viewpoint 2);

[0027] Figure 7 This is a schematic diagram of the main structure of the connection structure of an embodiment of the utility model;

[0028] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure of AA;

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the rotating disk in the connecting structure of an embodiment of the utility model;

[0030] The reference numerals in the drawings of the specification include:

[0031] Top cover 1, through hole 10, threaded hole 11, rotating disk 2, boss 3, fastening hole 30, sealing groove 31, guide groove 4, positioning protrusion 5, meter body 6, corrector 7, base 70. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0033] The accompanying drawings are for illustrative purposes only and are schematic rather than physical representations, and should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, certain components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the dimensions of actual products. It is understandable to those skilled in the art that certain well-known structures and their descriptions may be omitted from the accompanying drawings. Identical or similar reference numerals in the accompanying drawings of the embodiments of the present invention correspond to identical or similar components. In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art will understand the specific meanings of the above terms based on specific circumstances.

[0034] like Figure 1 - Figure 9 As shown, a flow meter connection structure of the present invention includes a top cover 1 and a rotating disk 2;

[0035] Among them, a through hole 10 is opened at the upper end of the top cover 1;

[0036] The middle of the rotating disk 2 has a cylindrical boss 3 that can penetrate into the through hole 10;

[0037] A guide groove 4 and a positioning protrusion 5 matched with the guide groove 4 are provided on one side opposite to the bottom of the top cover 1 and the rotating disk 2 .

[0038] This connection structure uses the top cover 1 and the rotating disk 2 to form a mechanical connection structure to connect the lower meter body 6 and the upper corrector 7. Since this connection structure is purely mechanical, the connection is reliable unless the top cover 1 is damaged.

[0039] The guide groove 4 and the positioning protrusion 5 are provided on the opposite side of the top cover 1 and the bottom of the rotating disk 2, and will not be exposed on the outer surface. Foreign matter and the like will not adhere to the surface and cause rotation jamming.

[0040] In this embodiment, the guide groove 4 is provided on the rotating disk 2, and correspondingly, the positioning protrusion 5 is provided on the top cover 1. Of course, the positions of the two can also be reversed, such as the guide groove 4 is provided on the top cover 1 and the positioning protrusion 5 is provided on the rotating disk 2. The above two methods can be adjusted according to actual conditions and are both within the scope of protection of this application.

[0041] Among them, the positioning protrusions 5 and the guide grooves 4 provided in the top cover 1 and the rotating disk 2 enable the corrector 7 to rotate relative to each other over a large angle, which is convenient for inspection, inspection and maintenance.

[0042] Although the positioning protrusion 5 disclosed herein is cylindrical, that is, has a circular cross-section, it can also have other cross-sectional forms, including square, oval or irregular cross-sections, and the cross-sectional shape changes along the length direction of the positioning protrusion 5.

[0043] Specifically, such as Figure 9 As shown, the guide groove 4 is arc-shaped, and the arc of the guide groove 4 is not greater than 180 degrees. The corrector 7 is bent to rotate forward or reverse relative to the watch body 6. The inner wall of the arc-shaped guide groove 4 can be provided with a lubricating coating, so that the corrector 7 is smoother and quieter during the relative rotation process. The lubricating coating can be made of polytetrafluoroethylene or grease.

[0044] Specifically, during use, insert one side of the boss 3 in the rotating disk 2 into the through hole 10 of the top cover 1, wherein the positioning protrusion 5 is inserted into the guide groove 4. The cover of the corrector 7 is opened, and bolts are inserted into the interior of the corrector 7 and engaged with the fastening holes 30 on the boss 3 to connect the corrector 7 and the boss 3. The connecting structure and the corrector 7 are lifted as a whole onto the upper part of the meter body 6, and the edge of the top cover 1 is aligned with the preset groove on the upper part of the meter body 6. The connecting structure and the meter body 6 are connected by bolts engaging the threaded holes 11.

[0045] like Figure 8As shown, at least one sealing groove 31 is formed on the peripheral wall of the boss 3. This sealing groove 31 can be provided with an O-ring. After the connection structure is assembled with the meter body 6 and the corrector 7, the respective connections provide a good seal, preventing external water from seeping into the meter body 6 below through the connection structure, potentially damaging the flowmeter's internal components and causing measurement deviation. Similarly, a groove can be formed at the top of the meter body 6 to mate with the top cover 1, and an O-ring can be provided in the groove.

[0046] The sealing groove 31 in this embodiment is provided with two layers. After assembly, the sealing groove 31 at the lower layer is flush with the through hole 10 of the top cover 1 .

[0047] like Figure 5 As shown, the cross section of the rotating disk 2 is in the shape of an inverted T. The outer diameter of the rotating disk 2 is larger than the aperture of the through hole 10.

[0048] Furthermore, the profile of the top cover 1 in this technical solution is not specifically limited, including but not limited to rectangular, polygonal, or triangular shapes, and can be adaptively adjusted based on factors such as the size and dimensions of the flow meter below and the stability of the connection. A threaded hole 11 is formed at the top end of the top cover 1 for connection to the flow meter body 6.

[0049] The top cover 1 is fixedly connected to the upper end of the meter body 6 of the meter by means of bolts fitting into the threaded holes 11 , so that the corrector 7 above is movably connected.

[0050] In addition, a base 70 may be provided on the lower end face of the corrector 7 that matches the present connection structure, and is connected to the boss 3 of the rotating disk 2 through the base 70. The base 70 is at a certain angle to the plane where the lower end face of the corrector 7 is located. Such an arrangement allows the upper corrector 7 to be tilted after being connected, providing a better observable angle.

[0051] The above are only embodiments of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme based on their own abilities under the guidance of this application. Some typical known structures or methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, they can also make several variations and improvements, which should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A flow meter connection structure, characterized in that: include: A top cover, with a through hole formed at the upper end; A rotating disk, with a boss at the middle portion that can penetrate into the through hole; The top cover and the opposite side of the bottom of the rotating disk are provided with a guide groove and a positioning protrusion matched with the guide groove.

2. A flow meter connection structure according to claim 1, characterized in that: The guide groove is arc-shaped.

3. A flow meter connection structure according to claim 2, characterized in that: The curvature of the guide groove is no greater than 180 degrees.

4. A flow meter connection structure according to claim 1, 2 or 3, characterized in that: The guide groove is arranged on the rotating disk, and the positioning protrusion is arranged on the top cover.

5. A flow meter connection structure according to claim 1, 2 or 3, characterized in that: The guide groove is formed on the top cover, and the positioning protrusion is arranged on the rotating disk.

6. A flow meter connection structure according to claim 4, characterized in that: A plurality of fastening holes are formed on the boss.

7. A flow meter connection structure according to claim 1, 2, 3 or 6, characterized in that: The cross section of the rotating disk is in an inverted T shape.

8. A flow meter connection structure according to claim 7, characterized in that: At least one layer of sealing grooves is provided on the peripheral wall of the boss.

9. A flow meter connection structure according to claim 1, 2, 3, 6 or 8, characterized in that: The top cover is rectangular, and a threaded hole for connecting with the flow meter body is opened on the upper end.

10. A flow meter connection structure according to claim 9, characterized in that: The inner wall of the guide groove is provided with a lubricating coating.

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