WO2024040834A1

WO2024040834A1 - Gusset plate, coriolis flowmeter, and preparation method for gusset plate

Info

Publication number: WO2024040834A1
Application number: PCT/CN2022/142630
Authority: WO
Inventors: 尚保园; 王涛
Original assignee: 沃森测控技术（河北）有限公司
Priority date: 2022-08-22
Filing date: 2022-12-28
Publication date: 2024-02-29
Also published as: CN115077647A; CN115077647B

Abstract

A gusset plate, a Coriolis flowmeter, and a preparation method for the gusset plate. The gusset plate (1) comprises a first plate body (6) and a second plate body (9). The first plate body (6) is provided with inner curved sections (7), which are configured to be attached to inner sides of pipe body bending sections (5). The second plate body (9) is provided with outer curved sections (10), which are configured to be attached to outer sides of the pipe body bending sections (5). The first plate body (6) is configured to be fixedly connected to the second plate body (9), so that the inner curved sections (7) and the outer curved sections (10) tightly hold the pipe body bending sections (5) from inner and outer sides. The first plate body (6) and the second plate body (9) are attached to the pipe body bending sections (5) by means of the inner curved sections (7) and the outer curved sections (10), so that the stability at a connection position can be improved, and relative sliding is avoided. In addition, by means of first preparing first annular members (12) and second annular members (13) and then cutting the first and second annular members, a plurality of first plate bodies (6) and second plate bodies (9) can be prepared at a time, thereby improving the preparation efficiency of the first plate bodies (6) and the second plate bodies (9), and reducing the preparation cost.

Description

Node plate, Coriolis flow meter and preparation method of node plate

Technical field

The invention relates to the technical field of round pipe fixing, and in particular to a node plate, a Coriolis flowmeter and a method for preparing the node plate.

Background technique

The gusset plate has a through hole for the circular pipe to pass through. When it is sleeved on the curved section of the circular pipe, the positioning of the curved section of the circular pipe can be achieved by fixing the gusset plate on a fixed structure. For example, referring to Figures 1 and 2, the core component of a Coriolis flowmeter includes a measuring tube with a curved section positioned through a gusset plate. The gusset plate is usually soldered to the measuring tube. However, the through holes on the gusset plate corresponding to the curved section of the round pipe are usually straight holes and cannot fit the curved surface of the curved section. There are gaps and interference between the two. If modern processing technology is used to process the through hole into a curved hole that matches the curved section, such as using a four-axis or above machining center to process the through hole, the cost will be greatly increased.

Contents of the invention

The object of the present invention is to provide a gusset plate, a Coriolis flowmeter and a method for preparing the gusset plate, which ensures that the gusset plate fits the curved section of the pipe body and at the same time reduces the preparation cost of the gusset plate.

In order to achieve the above objects, the present invention provides the following solutions:

The invention discloses a node board, which includes:

A first plate body, the first plate body has an inner curved surface section, and the inner curved surface section is used to fit inside the curved section of the pipe body;

a second plate body, the second plate body has an outer curved surface section, and the outer curved surface section is used to fit on the outside of the curved section of the pipe body;

The first plate body is used to be fixedly connected to the second plate body, so that the inner curved surface segment and the outer curved surface segment hug the pipe bending segment from both inside and outside respectively.

Preferably, the first plate body also has a first solder guide groove, and the first solder guide groove is arranged adjacent to the inner curved surface section; the second plate body also has a second solder guide groove, so The second solder guide groove is arranged adjacent to the outer curved surface segment.

Preferably, the extension direction of the first solder guide groove is the axial direction of the bent section of the tube body; the extension direction of the second solder guide groove is the axial direction of the bent section of the tube body.

Preferably, after the first plate body and the second plate body are fixedly connected, the inner curved surface segment and the outer curved surface segment form a hole that matches the cross-sectional outer contour of the pipe body bending segment.

Preferably, the first plate body has a plurality of inner curved surface segments, and the plurality of inner curved surface segments are respectively used to fit inside different bending segments of the pipe body; the second plate body has a plurality of inner curved surface segments. The outer curved surface segments correspond to the inner curved surface segments, and the plurality of outer curved surface segments are respectively used to fit on the outside of different curved segments of the pipe body.

The invention also discloses a Coriolis flowmeter, which includes a measuring tube and the above-mentioned gusset plate. The measuring tube has a curved section of the tube body, and the first plate body and the second plate body are fixed to each other. , the curved surface is welded and connected to the inner side of the curved section of the pipe body, and the outer curved surface section is welded and connected to the outer side of the curved section of the pipe body.

The invention also discloses a method for preparing a node plate, which includes the following steps:

S1. Prepare a first ring-shaped member. The outer surface of the first ring-shaped member is formed by a first busbar rotating around the first axis. The first busbar is a section of the cross-sectional outer contour of the curved section of the pipe body located inside the bend. The radius of rotation of the first busbar is the bending radius inside the curved section of the pipe body; a second ring-shaped member is prepared, and the inner side of the second ring-shaped member is formed by the second busbar rotating around the second axis, and the second ring-shaped member is formed by rotating the second busbar around the second axis. The second busbar is a section where the cross-sectional outer contour of the curved section of the pipe body is located outside the bend, and the rotation radius of the second busbar is the bending radius outside the curved section of the pipe body;

S2. Cut the first ring member along different axial planes of the first ring member, and divide the first ring member into multiple first plates; respectively along different axial planes of the second ring member. The second ring-shaped member is cut through the axial plane to divide the second ring-shaped member into a plurality of second plate bodies.

Preferably, the first ring-shaped member and the second ring-shaped member are produced by casting or injection molding.

The invention also discloses another method for preparing a node plate, which includes the following steps:

S1. Prepare a first ring-shaped member. The outer surface of the first ring-shaped member includes inner curved surfaces and first solder guide grooves alternately arranged along the circumferential direction. The inner curved surface is rotated by the first busbar around the first axis for less than one turn. It is formed that the outer diameter of the first busbar is the same as the outer diameter of the pipe bending section, and the rotation radius of the first busbar is the bending radius inside the pipe body bending section; a second ring-shaped piece is prepared, and the second ring-shaped piece The inner side includes outer curved surfaces and second solder guide grooves alternately arranged along the circumferential direction. The outer curved surface is formed by rotating the second busbar around the second axis for less than one turn. The second busbar is connected to the curved section of the tube body. The outer diameter of the outer circle is the same, and the rotation radius of the second busbar is the bending radius outside the bending section of the tube body;

S2. Cut the first ring member along different axial planes of the first ring member, and cut the first ring member into a plurality of first plates; cut the second ring member along different axial planes of the second ring member. , cutting the second ring member into a plurality of second plates.

Compared with the prior art, the present invention achieves the following technical effects:

In the present invention, since the first plate body and the second plate body are respectively fitted with the curved section of the pipe body through the inner curved surface section and the outer curved surface section, the stability of the connection position can be improved and relative sliding can be avoided. In addition, by dividing the gusset plate into a first plate body and a second plate body, the first plate body and the second plate body can be prepared respectively, and then the first plate body and the second plate body can be installed on the bent section of the pipe body, reducing the the difficulty of preparation. In the present invention, by first preparing the first ring-shaped member and the second ring-shaped member and then cutting them, multiple first and second plate bodies can be prepared at one time, thereby improving the preparation of the first and second plate bodies. efficiency and reduce preparation costs.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the drawings of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a diagram showing the positional relationship between the measuring tube and the gusset plate in the existing Coriolis flowmeter;

Figure 2 is a partial structural diagram of Figure 1;

Figure 3 is a diagram showing the positional relationship between the measuring tube and the node plate in the Coriolis flowmeter of this embodiment;

Figure 4 is an enlarged view of D in Figure 3;

Figure 5 is a perspective view of the shape relationship between the first ring member and the measuring tube;

Figure 6 is a cross-sectional view of the shape relationship between the first ring member and the measuring tube;

Figure 7 is an enlarged view of F in Figure 6;

Figure 8 is a cutaway rendering of the first ring member;

Figure 9 is a perspective view of the shape relationship between the second ring member and the measuring tube;

Figure 10 is a cross-sectional view of the shape relationship between the second ring member and the measuring tube;

Figure 11 is an enlarged view of H in Figure 10;

Figure 12 is a cross-sectional rendering of the second ring member without the second solder guide groove;

Figure 13 is a schematic diagram of the node board in this embodiment;

Figure 14 is another schematic diagram of the node board in this embodiment;

Explanation of reference symbols: C-axis of the curved section of the pipe body; R1-bending radius inside the curved section of the pipe body; R2-bending radius outside the curved section of the pipe body; 1-gusset plate; 2-measuring tube; 3-interference area ; 4-gap area; 5-tube body bending section; 6-first plate body; 7-inner curved surface section; 8-first solder guide groove; 9-second plate body; 10-outer curved surface section; 11- The second solder guide groove; 12-the first ring member; 13-the second ring member.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. In this embodiment, the cross-sectional outer contour of the pipe body bending section 5 is circular. At this time, the pipe body bending section 5 is a round pipe bending section. Depending on the actual situation, the outer contour can also be an ellipse, a regular polygon, or other shapes.

Referring to FIGS. 3 to 4 and 12 to 14 , this embodiment provides a node plate 1 , which includes a first plate body 6 and a second plate body 9 . The first plate body 6 has an inner curved surface section 7 , and the inner curved surface section 7 is used to fit inside the curved section 5 of the pipe body. The second plate body 9 has an outer curved surface segment 10 , and the outer curved surface segment 10 is used to fit on the outside of the curved segment 5 of the pipe body. The first plate body 6 is used to be fixedly connected with the second plate body 9 so that the inner curved surface section 7 and the outer curved surface section 10 hug the pipe body bending section 5 from both inside and outside sides.

In this embodiment, since the first plate body 6 and the second plate body 9 fit with the pipe body bending section 5 through the inner curved surface section 7 and the outer curved surface section 10 respectively, the stability of the connection position can be improved and relative sliding can be avoided. In addition, by dividing the gusset plate 1 into the first plate body 6 and the second plate body 9, the first plate body 6 and the second plate body 9 can be prepared respectively, and then the first plate body 6 and the second plate body 9 can be installed In the bent section 5 of the pipe body, the preparation difficulty is reduced.

As a possible example, the first plate body 6 also has a first solder guide groove 8 , the first solder guide groove 8 is arranged adjacent to the inner curved surface section 7 , and the second plate body 9 also has a second solder guide groove 8 . The groove 11 and the second solder guide groove 11 are arranged adjacent to the outer curved surface section 10 . When the first plate body 6 is connected to the pipe body bending section 5 by soldering, and when the second plate body 9 is connected to the pipe body bending section 5 by soldering, the first solder guide groove 8 and the second solder guide groove 11 It can guide the brazing material into the designated position, thereby improving the brazing quality. In addition, the first plate body 6 and the second plate body 9 can also be fixed to the pipe bending section 5 through other means, such as bonding. For example, the first plate body 6 has a plurality of inner curved surface segments 7 and a plurality of first solder guide grooves 8, and the second plate body 9 has a plurality of outer curved surface segments 10 and a plurality of second solder guide grooves. 11.

As a possible example, the extension direction of the first solder guide groove 8 is the direction of the axis C of the bent section of the tube body, and the extension direction of the second solder guide groove 11 is the direction of the axis C of the bent section of the tube body. In addition, the extension direction of the first solder guide groove 8 and the extension direction of the second solder guide groove 11 may also form a non-perpendicular angle with the axis C of the bent section of the tube body.

As a possible example, after the first plate body 6 and the second plate body 9 are fixedly connected, the inner curved surface segment 7 and the outer curved surface segment 10 form a hole that matches the cross-sectional outer contour of the pipe body bending segment 5 . However, actual implementations are not limited to this. For example, after the first plate body 6 and the second plate body 9 are fixedly connected, the edge of the inner curved surface segment 7 and the edge of the outer curved surface segment 10 are not connected, that is, the inner curved surface segment 7 and the outer curved surface segment 10 do not form a complete hole. (The sum of the corresponding central angles of the two circles is less than 360 degrees).

As a possible example, the first plate body 6 has a plurality of inner curved surface segments 7 , and the plurality of inner curved surface segments 7 are respectively used to fit inside the different pipe body bending segments 5 , and the second plate body 9 has a plurality of inner curved surface segments 7 . The outer curved surface segments 10 and the plurality of outer curved surface segments 10 are respectively used to fit on the outsides of different pipe body bending segments 5 . At this time, the gusset plate 1 can be installed on multiple pipe bending sections 5 at the same time.

This embodiment also provides a Coriolis flowmeter, which includes a measuring tube 2 and the above-mentioned node plate 1 . The measuring tube 2 has a bent section 5 of the tube body. The first plate body 6 and the second plate body 9 are fixed to each other. The curved surface is welded to the inside of the bent section of the tube body 5. The outer curved surface section 10 is connected to the bent outside of the bent section 5 of the tube body. Welded together. Since this Coriolis flowmeter uses the above-mentioned gusset plate 1, it also has the technical effects of the above-mentioned gusset plate 1, which will not be described again here.

Referring to Figures 5 to 13, this embodiment also provides a method for preparing a gusset plate, which is used to prepare the above-mentioned gusset plate 1 without the first solder guide groove 8 and the second solder guide groove 11, including the following steps:

S1. Prepare the first ring member 12. The outer surface of the first ring member 12 is formed by one rotation of the first bus bar around the first axis. The outer diameter of the first bus bar is the same as that of the tube bending section 5. The rotation radius of the first bus bar is is the bending radius R1 inside the bending section of the pipe body. The second ring-shaped member 13 is prepared. The inner surface of the second ring-shaped member 13 is formed by a second bus bar rotating around the second axis. The second bus bar is the same as the outer diameter of the pipe body bending section 5. The rotation radius of the second bus bar is The bending radius R2 on the outside of the body bending section.

S2. Cut the first ring member 12 along different axial planes of the first ring member 12, and divide the first ring member 12 into a plurality of first plates 6. Obviously, the inner curved surface segment 7 is part of the outer surface. The second ring member 13 is sectioned along different axial planes of the second ring member 13 to divide the second ring member 13 into a plurality of second plates 9 . Obviously, the outer curved surface segment 10 is part of the inner surface. Depending on the required sizes of the first plate body 6 and the second plate body 9, different cutting positions can be selected.

Through the above preparation method, multiple first plate bodies 6 and second plate bodies 9 can be prepared at one time, thereby improving the preparation efficiency of the first plate bodies 6 and second plate bodies 9 .

Referring to Figures 5 to 11 and 14, this embodiment also provides another method for preparing a gusset plate, which is used to prepare the above-mentioned gusset plate 1 having the first solder guide groove 8 and the second solder guide groove 11, including Follow these steps:

S1. Prepare the first ring member 12. The outer surface of the first ring member 12 includes inner curved surfaces and first solder guide grooves 8 alternately arranged along the circumferential direction. The inner curved surface is formed by less than one rotation of the first bus bar around the first axis. , the first busbar is a section of the cross-sectional outer contour of the pipe body bending section 5 located inside the bend, and the rotation radius of the first busbar is the bending radius R1 inside the pipe body bending section. Prepare a second ring member 13. The inner side of the second ring member 13 includes an outer curved surface and a second solder guide groove 11 alternately arranged along the circumferential direction. The outer curved surface is formed by rotating the second busbar around the second axis for less than one turn. The second busbar is a section of the cross-sectional outer contour of the pipe body bending section 5 located outside the bend, and the rotation radius of the second busbar is the bending radius R2 outside the pipe body bending section.

S2. Cut the first ring member 12 along different axial planes of the first ring member 12, and cut the first ring member 12 into a plurality of first plates 6. Obviously, the inner curved surface segment 7 is an inner curved surface or a part of the inner curved surface. The second ring member 13 is cut along different axial planes of the second ring member 13 to cut the second ring member 13 into a plurality of second plates 9 . Obviously, the outer curved surface segment 10 is an outer curved surface or a part of the outer curved surface.

There are many ways to prepare the first ring member 12 and the second ring member 13, and those skilled in the art can choose according to actual needs. For the above two methods of preparing the gusset plate 1 , both the first annular member 12 and the second annular member 13 can be prepared by casting or injection molding.

This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, based on this The idea of the invention will be subject to change in the specific implementation and scope of application. In summary, the contents of this description should not be construed as limitations of the present invention.

Claims

A gusset plate is characterized in that it includes:

A first plate body, the first plate body has an inner curved surface section, and the inner curved surface section is used to fit inside the curved section of the pipe body;

a second plate body, the second plate body has an outer curved surface section, and the outer curved surface section is used to fit on the outside of the curved section of the pipe body;

The first plate body is used to be fixedly connected to the second plate body, so that the inner curved surface segment and the outer curved surface segment hug the pipe bending segment from both inside and outside respectively.
The gusset plate according to claim 1, characterized in that the first plate body also has a first solder guide groove, the first solder guide groove is arranged adjacent to the inner curved surface section; the second plate The body also has a second solder guide groove, and the second solder guide groove is arranged adjacent to the outer curved surface section.
The gusset plate according to claim 2, wherein the extension direction of the first solder guide groove is the axial direction of the bent section of the tube body; the extension direction of the second solder guide groove is the The axis direction of the bent section of the pipe body.
The gusset plate according to claim 1, characterized in that, after the first plate body and the second plate body are fixedly connected, the inner curved surface section and the outer curved surface section form a curved section of the pipe body. The cross-sectional outer contour is adapted to the hole.
The gusset plate according to claim 1, characterized in that the first plate body has a plurality of inner curved surface segments, and the plurality of inner curved surface segments are respectively used to fit on different curved segments of the pipe body. The inside of the second plate body has a plurality of outer curved surface segments corresponding to the inner curved surface segment, and the plurality of outer curved surface segments are respectively used to fit on the outside of different curved segments of the pipe body.
A Coriolis flowmeter, including a measuring tube, characterized in that it also includes a gusset plate according to any one of claims 1 to 5, the measuring tube has a bent section of the tube body, and the first plate body The second plate body is fixed to each other, the curved surface is welded and connected to the inner side of the curved section of the pipe body, and the outer curved surface section is welded and connected to the outer side of the curved section of the pipe body.
A method for preparing a gusset plate, which is characterized in that it includes the following steps:

S1. Prepare a first ring-shaped member. The outer surface of the first ring-shaped member is formed by a first busbar rotating around the first axis. The first busbar is a section of the cross-sectional outer contour of the curved section of the pipe body located inside the bend. The radius of rotation of the first busbar is the bending radius inside the curved section of the pipe body; a second ring-shaped member is prepared, and the inner side of the second ring-shaped member is formed by the second busbar rotating around the second axis, and the second ring-shaped member is formed by rotating the second busbar around the second axis. The second busbar is a section where the cross-sectional outer contour of the curved section of the pipe body is located outside the bend, and the rotation radius of the second busbar is the bending radius outside the curved section of the pipe body;

S2. Cut the first ring member along different axial planes of the first ring member, and divide the first ring member into multiple first plates; respectively along different axial planes of the second ring member. The second ring-shaped member is cut through the axial plane to divide the second ring-shaped member into a plurality of second plate bodies.
The method for preparing a gusset plate according to claim 7, wherein the first ring-shaped member and the second ring-shaped member are produced by casting or injection molding.
A method for preparing a gusset plate, which is characterized in that it includes the following steps:

S1. Prepare a first ring-shaped member. The outer surface of the first ring-shaped member includes inner curved surfaces and first solder guide grooves alternately arranged along the circumferential direction. The inner curved surface is rotated by the first busbar around the first axis for less than one turn. It is formed that the outer diameter of the first busbar is the same as the outer diameter of the pipe bending section, and the rotation radius of the first busbar is the bending radius inside the pipe body bending section; a second ring-shaped piece is prepared, and the second ring-shaped piece The inner side includes outer curved surfaces and second solder guide grooves alternately arranged along the circumferential direction. The outer curved surface is formed by rotating the second busbar around the second axis for less than one turn. The second busbar is connected to the curved section of the tube body. The outer diameter of the outer circle is the same, and the rotation radius of the second busbar is the bending radius outside the bending section of the tube body;

S2. Cut the first ring member along different axial planes of the first ring member, and cut the first ring member into a plurality of first plates; cut the second ring member along different axial planes of the second ring member. , cutting the second ring member into a plurality of second plates.
The method for preparing a gusset plate according to claim 9, wherein the first ring-shaped member and the second ring-shaped member are produced by casting or injection molding.