阅读说明：本技术 一种弯管型科氏流量计节点板 (Bent pipe type Coriolis flowmeter gusset plate ) 是由 王涛 马春利 潘巨光 尚保园 克里斯·罗尔夫 于 2021-01-21 设计创作，主要内容包括：公开了一种弯管型科氏流量计节点板,所述节点板包括板体,所述板体包括至少两个贯穿孔,所述贯穿孔用于置放所述科氏流量计的弯管；所述节点板的形状相对于由所述管穿孔的中心连线形成的轴不对称。该节点板采用不对称设计产生的反向不对称的机械参数,对节点板处的非对称振动进行补偿,将振动尽量限制在测量区域内,从而外界条件不影响有用的振动信号,最终使得流量计的测量结果稳定性提高。(The node plate comprises a plate body, wherein the plate body comprises at least two through holes, and the through holes are used for placing bent pipes of the Coriolis flowmeter; the gusset shape is asymmetric about an axis formed by the centerline of the tube perforations. The node board adopts reverse asymmetric mechanical parameters generated by asymmetric design to compensate asymmetric vibration at the node board and limit the vibration in a measurement area as much as possible, so that the external conditions do not influence useful vibration signals, and finally the stability of the measurement result of the flowmeter is improved.)

1. The bent pipe type Coriolis flowmeter gusset plate is characterized by comprising a plate body, wherein the plate body comprises at least two through holes, and the through holes are used for placing bent pipes of a Coriolis flowmeter;

the gusset shape is asymmetric about an axis formed by the centerline of the tube perforations.

2. The gusset of claim 1, further comprising a first flange, wherein the first flange is positioned vertically on the first side of the panel body.

3. The gusset of claim 2, wherein the width of the first flange is greater than or equal to the thickness of the panel body.

4. The gusset of claim 3, wherein the first flange has a height greater than the thickness of the panel body.

5. The gusset of claim 4, further comprising a second flange positioned vertically on a second side of the panel opposite the first side, wherein the first and second flanges are both positioned at a top of the panel.

6. The gusset of claim 5, wherein the width of the second flange is less than the width of the first flange, and/or the height of the second flange is less than the height of the first flange.

7. The gusset of claim 6, further comprising a third flap and a fourth flap, the third flap being positioned vertically on a third side of the panel, the fourth flap being positioned vertically on a fourth side of the panel, the third side being opposite the fourth side, the third flap and the fourth flap being positioned at a top of the panel.

8. The gusset of claim 1 or 7, wherein a first side of the gusset has a thickness greater than a thickness of a second side opposite the first side.

9. The gusset of claim 1 or 7, wherein a first side of the gusset is spaced further from a line drawn from a center of the tube perforations than a second side of the gusset is spaced from a line drawn from a center of the tube perforations, the first side being opposite the second side.

Technical Field

The invention relates to a gusset plate, in particular to a gusset plate applied to a bent tube type Coriolis flowmeter.

Background

In a coriolis mass flowmeter, a node plate divides the entire flow tube into a plurality of regions, a measurement region is defined between two node plates, and the flow is sensed by vibration in the measurement region, the vibration at the node plate being minimized to form a node. In order to ensure the stability of the measurement, the vibration should be confined inside, and the vibration is not transmitted to the outside through external parts such as the housing and the connecting parts (e.g., flanges).

In the existing design, the shape of the node plate is basically a symmetrical scheme, but for the bent tube type coriolis flowmeter, if the vibration at the node plate is analyzed, it can be seen that the vibration deformation at the node plate is not symmetrical relative to the transverse axis of the node plate, the vibration asymmetry can cause internal unbalance, the vibration can be propagated outwards, and correspondingly, the external vibration can be propagated inwards to influence the measurement performance.

In view of the above, the present invention provides a node plate for a bent tube type coriolis flowmeter for compensating for asymmetric vibration.

Disclosure of Invention

The invention provides a bent pipe type Coriolis flowmeter gusset plate which is characterized by comprising a plate body, wherein the plate body comprises at least two through holes, and the through holes are used for placing bent pipes of a Coriolis flowmeter;

the gusset shape is asymmetric about an axis formed by the centerline of the tube perforations.

Preferably, the gusset plate further comprises a first flange, and the first flange is vertically located on the first side of the plate body.

Preferably, the width of the first flanging is larger than or equal to the thickness of the plate body.

Preferably, the height of the first flanging is larger than the thickness of the plate body.

Preferably, the gusset plate further comprises a second flange vertically located on a second side of the plate body opposite to the first side, and the first flange and the second flange are both located at the top of the plate body.

Preferably, the width of the second flange is smaller than the width of the first flange, and/or the height of the second flange is smaller than the height of the first flange.

Preferably, the gusset plate further includes a third flange and a fourth flange, the third flange is vertically located on a third side of the plate body, the fourth flange is vertically located on a fourth side of the plate body, the third side is opposite to the fourth side, and the third flange and the fourth flange are both located on the top of the plate body.

Preferably, a thickness of a first side of the gusset plate is greater than a thickness of a second side opposite the first side.

Preferably, a distance between a first side of the gusset plate and a line connecting centers of the tube perforations is greater than a distance between a second side of the gusset plate and a line connecting centers of the tube perforations, the first side being opposite to the second side.

The invention brings the following effects: the asymmetric vibration at the node plate is compensated by utilizing the reverse asymmetric mechanical parameters generated by the asymmetrically designed node plate, and the vibration is limited in a measurement area as much as possible, so that the useful vibration signal is not influenced by external conditions, and finally, the stability of the measurement result of the flowmeter is improved.

Drawings

FIG. 1 is a first node board application.

Fig. 2 is a first node board structure diagram.

Fig. 3 is a second node board application.

Fig. 4 is a second node board structure diagram.

Fig. 5 is a third application of the gusset plate.

Fig. 6 is a third node board structure diagram.

Fig. 7 is a fourth node board structure diagram.

Fig. 8 is a fifth node board structure diagram.

Fig. 9 is a sixth node plate structure diagram.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

The bending tube type coriolis flowmeter node plate provided by the embodiment of the invention can be applied to a dual-bending tube or multi-bending tube coriolis flowmeter, the attached figure is only taken as an example of the dual-bending tube type coriolis flowmeter node plate, and the multi-bending tube type coriolis flowmeter node plate is a simple extension of the dual-bending tube type coriolis flowmeter node plate. As shown in fig. 1, the bending angle α of the double-bent-tube type coriolis flowmeter is greater than 30 degrees and less than 150 degrees. The node plates (nodepalate) A1, B1, C1 and D1 are the same in shape, and as shown in figure 2, each node plate comprises a plate body which comprises two through holes, the through holes are used for placing bent pipes of the Coriolis flowmeter, as shown in figure 1, when the node plates are used, the two bent pipes penetrate through the two corresponding through holes, and when the node plates are applied to a multi-bent pipe type Coriolis flowmeter, the through holes are multiple, and the bent pipes of the Coriolis flowmeter are placed correspondingly.

The gusset shape is asymmetrical about an axis formed by the centerline of the tube perforations. The shape of the gusset refers to a solid shape, and the shape asymmetry can be in various forms, see the examples below.

In one example, the gusset plate further includes a first flange that is positioned vertically on the first side of the panel body. The first flanging can be formed by directly turning up the gusset plate to be integrally formed, but when the thickness of the plate body is overlarge (such as applied to a large-caliber flow meter), the plate body is not suitable for being bent, so that the first flanging can also be an independent element connected with the plate body through welding and other modes. The width Ws of the first flanging is larger than or equal to the thickness H of the plate body. If the first flanging is realized by directly bending the plate body, the width of the first flanging is generally equal to the thickness of the plate body. The height Hs of the first flange is at least greater than 1mm, and is generally greater than the gusset thickness H. Since the vibration deformation asymmetry is caused by the asymmetry of the mechanical parameters (MCK, mass, damping or stiffness), the use of asymmetrically designed gussets will produce inversely asymmetric mechanical parameters to compensate. Through the design of the first flanging, the rigidity of the first side of the gusset plate is larger than that of the second side opposite to the first side, so that the asymmetric vibration at the gusset plate is compensated.

In one example, referring to fig. 3 and 4, the gusset plate further includes a second flange vertically located on a second side of the plate body opposite to the first side, and the first flange and the second flange are both located at the top of the plate body. The width of the second flange is smaller than the width of the first flange, and/or the height of the second flange is smaller than the height of the first flange, that is, it is required to ensure that the first flange and the second flange have different sizes, so that the rigidity of the first side of the gusset plate is larger than that of the second side opposite to the first side. The flanges are arranged on the two sides, so that the integral rigidity of the gusset plate can be improved.

In one example, referring to fig. 5 and 6, the gusset further includes a third flange and a fourth flange, the third flange is vertically located on a third side of the panel, the fourth flange is vertically located on a fourth side of the panel, the third side is opposite to the fourth side, and the third flange and the fourth flange are also located on the top of the panel. The third flange and the fourth flange may have the same height and width or different heights and widths. Through the design of third turn-ups and third turn-ups for four edges of plate body all set up the turn-ups, have increased holistic rigidity.

In one example, referring to FIG. 7, a gusset plate employing a wedge arrangement is equally applicable to the present invention, based on the principle that the gusset plate is asymmetrical. The thickness of a first side of the gusset plate is greater than the thickness of a second side opposite the first side, i.e., Hs > H. This scheme may be established alone or in combination with the above examples.

In one example, where the internal space allows, the purpose of asymmetry of the gusset plate may also be achieved by varying the dimensions or characteristics of a single side of the X-axis, see fig. 8, where the distance Ws between the first side of the gusset plate and the X-axis of the center line of the tube penetration is greater than the distance W between the second side of the gusset plate and the X-axis of the center line of the tube penetration, the first side being opposite the second side. Referring to fig. 9, the gusset asymmetry can also be achieved using different features on both sides of the X-axis.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.