阅读说明：本技术 流量计的壳体和包括该壳体的流量计 (Casing of flowmeter and flowmeter comprising casing ) 是由 王东晓 徐迎雪 于 2019-04-08 设计创作，主要内容包括：本公开涉及流量计的壳体和包括该壳体的流量计。在一个方面中,提供一种流量计的壳体。该壳体包括罩部分,罩部分包括分体的第一本体和第二本体,第二本体与所述第一本体连接从而形成罩部分,罩部分形成为弓形部以容置流量计的呈弯管形状的测量管。该壳体的特征在于罩部分构造成使得第一本体与第二本体之间的连接位置仅设置在所述弓形部的外部处。根据本公开,壳体能够避免与测量管发生共振、能够容易地被进行焊接和/或能够减轻重量。(The present disclosure relates to a housing of a flow meter and a flow meter including the housing. In one aspect, a housing for a flow meter is provided. The housing includes a cover portion including first and second bodies that are separate bodies, the second body being connected to the first body to form the cover portion, the cover portion being formed into an arcuate portion to receive a bent tube shaped measurement tube of the flow meter. The housing is characterized in that the cover portion is configured such that a connection position between the first body and the second body is provided only at an outer portion of the arcuate portion. According to the present disclosure, the case can avoid resonance with the measurement pipe, can be easily welded, and/or can reduce weight.)

1. A housing (1, 11, 111) of a flow meter, the housing (1, 11, 111) comprising a cover part (20, 200), the cover part (20, 200) comprising a first body (201, 2001) and a second body (202, 2002) being separate bodies, the second body (202, 2002) being connected with the first body (201, 2001) so as to form the cover part (20, 200), the cover part (20, 200) being formed as an arch to accommodate a measuring tube (2) of the flow meter in the shape of a bent pipe,

characterized in that the cover portion (20, 200) is configured such that the connection location between the first body (201, 2001) and the second body (202, 2002) is provided only at the outside of the arch.

2. The housing (1, 11, 111) of the flow meter according to claim 1, characterized in that the housing (1, 11, 111) further comprises a base part (10), the base part (10) having a proximal end (101) and a distal end (102), both ends of the cover part (20, 200) being connected with the proximal end (101) and the distal end (102), respectively, such that a hollow is defined between the cover part (20, 200) and the base part (10).

3. The housing (1, 11, 111) of the flow meter according to claim 2, characterized in that the first body (201, 2001) is formed as an integral part with the base part (10).

4. The housing (1, 11, 111) of the flow meter according to claim 2, characterized in that the connection between the first body (201, 2001) and the second body (202, 2002) and/or the connection between the cover part (20, 200) and the base part (10) is a weld or an adhesive.

5. The housing (1, 11, 111) of the flow meter according to any of claims 1 to 4, characterized in that the cross-sectional shape of the first body (201, 2001) is complementary to the cross-sectional shape of the second body (202, 2002), such that the cover portion (20, 200) has a square, rectangular, circular or oval cross-section.

6. The casing (1, 11, 111) of the flowmeter of any one of claims 1 to 4, wherein the shroud portion (20, 200) formed as the arch defines a radially inner side and a radially outer side and comprises an axial sidewall, the first body (201, 2001) being disposed radially inward and the second body (202, 2002) being disposed radially outward, wherein:

the first body (201, 2001) is a substantially plate-shaped bow and the second body (202, 2002) is a channel-shaped bow open radially on the inside, so that a connection position between the first body (201, 2001) and the second body (202, 2002) is provided at a radially inner edge of the axial side wall;

the first body (201, 2001) is a channel-shaped bow open radially on the outside, and the second body (202, 2002) is a substantially plate-shaped bow, so that a connection position between the first body (201, 2001) and the second body (202, 2002) is provided at a radially outer edge of the axial side wall; or

The first body (201, 2001) is a channel-shaped bow open radially on the outside and the second body (202, 2002) is a channel-shaped bow open radially on the inside, so that the connection point between the first body (201, 2001) and the second body (202, 2002) is provided at a portion of the axial side wall between the radially outer edge and the radially inner edge.

7. The housing (1, 11, 111) of a flow meter according to claim 6, characterized in that:

in case the first body (201, 2001) is a substantially plate-shaped bow and the second body (202, 2002) is a channel-shaped bow opening radially on the inside, the first body (201, 2001) is provided with a first flange (2011) extending radially outwards, such that the first flange (2011) encloses a radially inner edge of the second body (202, 2002);

in case the first body (201, 2001) is a channel-like bow opening radially on the outside and the second body (202, 2002) is a substantially plate-like bow, the second body (202, 2002) is provided with a second collar extending radially inwards, such that the second collar encloses the radially outer edge of the first body (201, 2001).

8. A flow meter, characterized in that it comprises a housing (1, 11, 111) according to any of claims 1 to 7.

9. The flowmeter of claim 8 wherein said flowmeter is a coriolis mass flowmeter.

10. The flow meter according to claim 8 or 9, further comprising the measurement tube (2) and a proximal flow splitter and a distal flow splitter arranged at a proximal end (101) and a distal end (102), respectively, of the base portion (10) of the housing, the measurement tube (2) being connected at its upstream and downstream ends to the proximal and distal flow splitters, respectively.

Technical Field

The present disclosure relates to the field of metrology instruments, and in particular, to a housing for a flow meter.

Background

This section provides background information related to the present disclosure, but such information does not necessarily constitute prior art.

For precision meters such as mass flowmeters, the measurement tube is usually a relatively sensitive element, which must be protected by a housing. However, in actual use, in order to ensure the measurement accuracy of the mass flow meter, it is necessary to avoid the resonance between the casing and the measurement pipe from affecting the vibration of the measurement pipe. For example, in a typical coriolis mass flowmeter, generally, fluid is introduced into the measurement tube while the measurement tube is kept vibrating by the exciting coil to force the fluid to vibrate together with the measurement tube, and the inertia of the fluid will twist the measurement tube between the fluid inlet and the fluid outlet, causing the fluid inlet and the fluid outlet of the measurement tube to vibrate in different directions at the same time. Thus, the mass of the fluid can be calculated by calculating the phase difference between the fluid inlet and the fluid outlet. Thus, ensuring that the vibrations of the measurement pipe are not disturbed is an important factor in ensuring the measurement accuracy of the mass flow meter. In other words, avoiding resonance between the housing for the measuring tube and the measuring tube is crucial to improving the measurement accuracy of the mass flow meter. Furthermore, in order to ensure that the measuring tube can be accommodated in the closed space provided by the housing, the housing is usually designed to be of a split type, and the mounting of the measuring tube in the closed space is achieved by welding the split type components together after the measuring tube has been accommodated. Therefore, the ease of welding is also an important factor in the design of the housing.

In addition, in the flowmeter case according to the related art, there is also a problem of excessive use of materials and excessive weight.

Disclosure of Invention

This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features.

The present disclosure is directed to providing a flow meter housing that can avoid resonance with a measurement pipe, can be easily welded, and/or can be reduced in weight, thereby solving or reducing one or more of the problems set forth above.

According to an aspect of the present disclosure, there is provided a housing of a flow meter, the housing may include a cover portion including first and second bodies that are separate bodies, the second body being connected with the first body to form the cover portion, the cover portion being formed into an arch to accommodate a measurement tube of the flow meter in a shape of a bent pipe. The housing is characterized in that the cover portion is configured such that a connection position between the first body and the second body is provided only at an outer portion of the arcuate portion.

In some embodiments, the housing may further comprise a base portion having a proximal end and a distal end, the two ends of the cover portion being connected to the proximal end and the distal end respectively so as to define a hollow between the cover portion and the base portion.

In some embodiments, the first body may be formed as an integral part with the base portion.

In some embodiments, the connection between the first body and the second body and/or the connection between the cover portion and the base portion may be welded or bonded.

In some embodiments, the cross-sectional shape of the first body is complementary to the cross-sectional shape of the second body such that the mask portion may have a square, rectangular, circular or elliptical cross-section.

In some embodiments, the shroud portion formed as an arch defines a radially inner side and a radially outer side and includes an axial sidewall, the first body may be disposed radially inward and the second body may be disposed radially outward.

In some embodiments, the first body may be a generally plate-shaped bow and the second body may be a channel-shaped bow open radially inward such that the connection location between the first body and the second body is disposed at a radially inward edge of the axial sidewall.

In some embodiments, the first body may be a channel-shaped bow open radially outward, and the second body may be a substantially plate-shaped bow, such that the connection location between the first body and the second body is disposed at a radially outward edge of the axial side wall.

In some embodiments, the first body may be a radially outer open channel bow and the second body may be a radially inner open channel bow, such that the connection location between the first body and the second body is disposed at a portion of the axial sidewall between the radially outer edge and the radially inner edge.

In some embodiments, where the first body is a generally plate-shaped bow and the second body is a channel-shaped bow open radially inward, the first body may be provided with a first flange extending radially outward such that the first flange envelopes a radially inward edge of the second body.

In some embodiments, where the first body is a channel-like bow open radially outward and the second body is a substantially plate-like bow, the second body may be provided with a second flange extending radially inward such that the second flange envelopes a radially outer edge of the first body.

According to another aspect of the present disclosure, there is provided a flow meter that may include a housing as described above.

In some embodiments, the flow meter may be a coriolis mass flow meter.

In some embodiments, the flow meter may further include a measurement tube and proximal and distal flow splitters disposed at proximal and distal ends, respectively, of the base portion of the housing, to which the measurement tube upstream and downstream ends may be connected, respectively.

According to the above configuration, by forming the cover portion into the arcuate portion, the use of material is greatly reduced, the weight of the mass flow meter is reduced, and at the same time, the natural frequency of the case is effectively isolated from the driving frequency of the measurement pipe of the mass flow meter, thereby preventing resonance from occurring between the case and the measurement pipe. Further, the connecting position between the first body and the second body is provided only at the outer periphery (outside) of the arcuate portion, and thus, the first body and the second body can be easily welded.

Drawings

Features and advantages of one or more embodiments of the present disclosure will become more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings, which are not to scale and some features may be exaggerated or minimized to show details of particular components, wherein:

fig. 1 shows a perspective view of a first body and a second body of a cover portion of a housing of a measurement tube for a bent tube mass flow meter provided according to a first embodiment of the present disclosure;

FIG. 2 is a perspective view showing the assembly process of assembling the second body of the cover portion to the first body and the base portion of the housing;

fig. 3 shows a perspective view of a housing of a measurement tube for a bent tube mass flow meter provided according to a first embodiment;

fig. 4 shows a perspective view of a second body of a cover part of a housing of a measuring tube for a bent tube mass flow meter provided according to a second embodiment;

fig. 5 shows a perspective view of a housing of a measurement tube for a bent tube mass flow meter provided in accordance with a second embodiment;

fig. 6 shows a perspective view of a first body and a second body of a cover portion of a housing of a measurement pipe for a bent pipe mass flow meter provided in accordance with a third embodiment;

fig. 7 shows a perspective view of a housing of a measurement tube for a bent tube mass flow meter provided in accordance with a third embodiment;

fig. 8 shows a perspective view of a body portion of a housing of a measurement pipe for a bent pipe type mass flow meter provided according to a first comparative example;

fig. 9 shows a perspective view of a housing of a measuring tube for a bent tube mass flowmeter provided according to a first comparative example;

fig. 10 shows a perspective view of a body portion of a housing of a measurement pipe for a bent pipe mass flow meter provided according to a second comparative example; and

fig. 11 shows a perspective view of a housing of a measuring tube for a bent tube mass flowmeter provided according to a second comparative example;

in the drawings, the same or corresponding technical features or components will be denoted by the same or corresponding reference numerals.

Detailed Description

The disclosure will be described in detail below with the aid of exemplary embodiments with reference to the accompanying drawings. It is to be noted that the following detailed description of the present disclosure is intended for purposes of illustration only and is not intended to limit the present disclosure in any way. Moreover, like reference numerals are used to refer to like elements throughout the various figures.

It is also noted that, for the sake of clarity, not all features of an actual specific embodiment are described and illustrated in the specification and drawings, and that, in order to avoid obscuring the solution to which the present disclosure is directed in unnecessary detail, only the device structures closely related to the solution of the present disclosure are described and illustrated in the drawings and specification, and other details which are not relevant to the technical content of the present disclosure and known to those skilled in the art are omitted.

Next, the basic configuration of a casing of a measurement pipe for a bent pipe type mass flow meter according to the present disclosure (corresponding to the casing of the flow meter according to the present disclosure) is specifically described first with reference to fig. 1 to 3.

In the illustrated embodiment, the housing 1 may include a base portion 10, the base portion 10 having a proximal end 101 and a distal end 102 spaced apart from each other in the axial direction and an upper surface portion 103 extending in the axial direction between the proximal end 101 and the distal end 102, and the upper surface portion 103 is provided at the proximal end 101 and the distal end 102 of the housing 1 with openings 1030 through which the measurement pipe 2 of the elbow mass flow meter passes, respectively. It should be noted that the terms "proximal" and "distal" are defined in terms of the direction of fluid flow in the measurement tube. It will be appreciated that the base portion 10 of the housing 1 may be constructed in any suitable manner without departing from the scope of the present disclosure.

As shown in fig. 1 to 3, the housing 1 may include a cover portion 20. According to an exemplary embodiment of the present disclosure, the cover portion 20 may comprise a first body 201 and a second body 202, wherein the second body 202 is connected to the first body 201 in use forming the cover portion 20. According to an embodiment of the present disclosure, the cross-sectional shape of the first body 201 is complementary to the cross-sectional shape of the second body 202, so that the cover portion 20 formed by connecting the second body 202 to the first body 201 may have a cross-section in the shape of a square, circle, ellipse, or other polygon (such as a rectangle). It should be noted that the cross-sectional shape of the cover portion 20 is not limited thereto, and may be any regular shape or irregular shape as long as the cover portion 20 can define a space suitable for accommodating the measurement pipe 2.

According to an embodiment of the present disclosure, as shown in fig. 2 and 3, the cover part 20 is connected to the upper surface part 103 in use so as to define an enclosed space between the cover part 20 and the upper surface part 103 adapted to accommodate the measurement pipe 2 of the elbow mass flow meter, wherein the opening 1030 on the upper surface part 103 is accommodated within the enclosed space.

It should be noted that the term "when used" refers to a state in which the second body 202 is connected to the first body 201 after the measurement tube 2 of the elbow mass flow meter is extended from the opening 1030 at the proximal end through the upper surface portion 103 and then through the cover portion 20 and then back into the base portion 10 via the opening 1030 at the distal end. In other words, the term "in use" refers to a state in which the elbow type mass flowmeter is housed in the closed space of the cover portion 10, or to a state in which the flowmeter can be operated after being assembled.

In an exemplary embodiment, the first body 201 may form an integral component with the base portion 10, and the second body 202 may form a separate component with the first body 201 and the base portion 10. Preferably, in use, the second body 202 is connected to the first body 201 and the base portion 10 in a welded manner. It should be noted that the second body 202 may also be connected to the first body 201 and the base portion 10 in other ways, for example may be connected to the first body 201 and the base portion 10 in an adhesive manner.

In another exemplary embodiment, the first body 201, the second body 202, and the base portion 10 may be formed as separate parts, respectively. Preferably, the first body 201 may be first connected to the base portion 10 by welding or bonding, and then the second body 202 may be connected to the first body 201 and the base portion 10 by welding or bonding in use.

According to the embodiment of the present disclosure, as shown in fig. 3, in use, the cover part 20 formed by connecting the second body 202 to the first body 201 is formed as an arch part that arches away from the upper surface part 103 (that is, both ends of the cover part are connected with the proximal end part 101 and the distal end part 102, respectively, so that a hollow is defined between the cover part 20 and the base part 10), and the connection position of the first body 201 and the second body 202 is provided at the outer periphery (outside) of the arch part, wherein the term "outer periphery (outside) of the arch part" refers to a part of the arch part other than the surface directed inward and includes the outer peripheral edge of the arch part. As a supplementary explanation, the cover part 20 in the form of an arch defines a radially inner side and a radially outer side. For a mantle portion, for example having a square or rectangular cross-section, the mantle portion comprises an inwardly directed radially inner circumferential wall, an outwardly directed radially outer circumferential wall and two axially outer walls, in which case the term "outer circumference (exterior) of the arch" refers to the radially outer circumferential wall and the axially outer walls and does not comprise the radially inner circumferential wall. For a mantle portion having, for example, a circular or oval cross-section, the mantle portion also substantially comprises an inwardly directed radially inner circumferential wall, an outwardly directed radially outer circumferential wall and two axially outer walls, in which case the term "outer (outer) circumference of the arch" also refers to the radially outer circumferential wall and the axially outer walls and does not comprise the radially inner circumferential wall. That is, the term "outer periphery (outer portion) of the arcuate portion" corresponds to a portion of the cover portion located on the outer side where it is not convenient to perform welding or the like, except for a portion located on the radially inner side where it is not convenient to perform welding or the like.

Advantageous effects of the housing 1 provided according to the embodiment of the present disclosure will be described below by referring to comparative examples shown in fig. 8 to 11.

Fig. 8 and 9 are perspective views of a housing 1' of a measurement pipe for a bent pipe type mass flow meter provided according to a first comparative example. As shown in fig. 8 and 9, the cover portion 20 'of the housing 1' provided according to the first comparative example includes two identical body portions 201 ', wherein each of the body portions 201' includes a plate-like member 2011 'continuously extending from an upper surface portion of the base portion 10' in use and a flange (burring) 2012 'extending from an outer edge of the plate-like member 2011'. In use, the flanges 2012 ' of the two body portions 201 ' are connected to one another to form the shroud portion 20 '.

According to the case 1 'for the measuring tube of the bent tube type mass flow meter provided by this first comparative example, although the welding difficulty is low because the welding is only required from the outer surface of the cover portion 20' along the connecting position of the flanges 2012 'of the two body portions 201' when in use, since the cover portion 20 'of the case 1' continuously extends on the upper surface portion of the base portion 10 '(i.e., not the arcuate portion having the hollow portion), a large amount of material is required, which causes excessive material waste and leads to an excessive mass of the case particularly when the case 1' is used in a larger mass flow meter. Furthermore, and more importantly, the natural frequency of the housing 1 ' of this design may interfere with the drive frequency of the measurement tube 2 of the mass flow meter housed within the housing 1 ', causing the housing 1 ' to resonate with the measurement tube 2 and interfere with the vibration of the measurement tube 2.

In contrast to the case 1' provided in this comparative example 1, the case 1 provided in accordance with the embodiment of the present disclosure forms the hood portion 20 as an arcuate portion that is arched away from the upper surface portion 103 in use. In this way, material usage is greatly reduced, thereby reducing the weight of the mass flow meter. Furthermore, and more importantly, according to the housing 1 provided by the embodiments of the present disclosure, the natural frequency of the housing 1 can be effectively isolated from the driving frequency of the measurement pipe 2 of the mass flow meter. For example, the case 1 provided according to the embodiment of the present disclosure has a natural frequency of about 1000Hz, whereas the measurement pipe 2 of a typical mass flow meter has a driving frequency of about 150Hz to 200Hz, whereby the case 1 can be effectively prevented from resonating with the measurement pipe 2.

Fig. 10 and 11 are perspective views of a housing 1 ″ of a measuring tube for a bent tube type mass flow meter provided according to a second comparative example. As shown in fig. 10 and 11, according to the housing 1 "provided by the second comparative example, the cover portion 20" includes two identical body portions 201 ", wherein each of the body portions 201" includes a U-shaped plate portion, an inner flange 2012 "extending in the axial direction from an inner edge of the U-shaped plate portion, and an outer flange 2013" extending in the axial direction from an outer edge of the U-shaped plate portion. In use, the inner and outer flanges 2012 ", 2013" of the two body portions 201 "are respectively connected to one another to form an arcuate cover portion 20".

According to the case 1 ″ for the measurement pipe of the bent pipe type mass flow meter provided by this second comparative example, although the use of material is reduced as compared with the first comparative example, since the two inner flanges 2012 ″ thereof are connected at the inner periphery (radially inner wall) of the hood portion 20 ″, this leads to an increase in welding difficulty particularly when the case 1 ″ is used in a smaller mass flow meter. In extreme cases, this may lead to the soldering tip not being able to reach into it, making the operation difficult and possibly leading to a mounting failure of the housing.

Compared to the case 1 ″ provided in comparative example 2, according to the case 1 provided in the embodiment of the present disclosure, the connection position of the first body 201 and the second body 202 of the hood portion 20 is provided at the outer periphery (outside) of the arcuate portion formed by the hood portion 20. In this way, connection of the first body 201 and the second body 202 is enabled to be easily achieved. For example, when the first body 201 and the second body 202 are connected by welding, the operator does not need to extend the welding head into the hard-to-reach inner periphery of the hood portion 20, thereby greatly improving the mounting efficiency of the housing.

Several specific embodiments of the housing according to the present disclosure will be described below, by way of example only, with reference to fig. 1 to 7. It is to be understood that other modifications and variations may be effected by one skilled in the art without departing from the spirit and scope of the disclosure, and all such modifications and variations are within the scope of the disclosure.

In the first embodiment shown in fig. 1 to 3, the first body 201 is a U-shaped portion (i.e., a substantially plate-shaped bow) that arches away from the upper surface portion 103, and the second body 202 is a hood portion (i.e., a channel-shaped bow that opens radially inward) that is disposed radially outward of the U-shaped portion when in use.

In an exemplary embodiment, the dome section as the second body 202 may comprise an outer portion 2021 and a second flange 2022 extending radially inwardly from the outer portion 2021, wherein, in use, the second flange 2022 is connected to the U-shaped portion as the U-shaped portion of the first body 201 in a form-fitting manner from a radially outer side thereof such that a connection position of the first body 201 with the second body 202 is located at an outer peripheral edge of the formed cover portion 20 (i.e., a radially inner edge of an axial side wall of the cover portion 20).

According to the housing 1 provided in the first embodiment, the hood portion 20 formed by connecting the second body 202 to the first body 201 from the radially outer side is formed in use as an arcuate portion that is arched away from the upper surface portion 1030. Thus, the use of materials is greatly reduced, the mass flow meter is reduced in weight, and at the same time, the natural frequency of the case 1 is effectively isolated from the driving frequency of the measurement pipe 2 of the mass flow meter, thereby preventing resonance between the case 1 and the measurement pipe 2. Further, according to this first embodiment, the second body 202 is connected to the first body 201 from the radially outer side of the first body 201 in use such that the connection position of the first body 201 and the second body 202 is provided at the outer peripheral edge of the formed hood portion 20, and thus, the first body 201 and the second body 202 can be easily welded.

Fig. 4 and 5 show a housing 11 provided according to a second embodiment that is a modification of the first embodiment shown in fig. 1 to 3. The second embodiment differs from the first embodiment in that the U-shaped portion as the first body 201 may comprise a first flange (i.e., a first flange) 2011 extending radially outward along an outer edge of the U-shaped portion, wherein the first flange 2011 engages on an outer surface of the second flange 2022 (i.e., the first flange 2011 envelopes a radially inner edge of the second body 202) when the dome portion as the second body 202 is connected to the first body 201.

According to the case 11 provided by this second embodiment, compared to the first embodiment, the first flange 2011 which is joined to the outer surface of the second flange 2022 of the second body 202 in use is provided at the outer edge of the first body 201 (i.e., the first body 201 and the second body 202 are partially overlapped in the axial direction), so that the weld can be extended onto the surface of the hood portion 20 (between the overlapped two surfaces), and therefore the welding and the grinding of the case can be facilitated more, and the ease and reliability of welding can be further improved.

Fig. 6 and 7 illustrate a housing 111 provided according to a third embodiment of the present disclosure. Unlike the first and second embodiments shown in fig. 1 to 5, in the case 111 of this third embodiment, the hood portion 200 formed by connecting the second body 2002 to the first body 2001 has a circular cross section. The housing 111 provided according to the third embodiment can also achieve the same advantageous effects as those of the first embodiment.

It should be noted that, although not shown, the present disclosure may be implemented in other modified embodiments. Several modified examples of embodiments according to the present disclosure will be described below by way of example only.

According to the first modified example, the first body may include a first U-shaped portion that arches away from the upper surface portion 103 and a first flange that extends radially outward from the first U-shaped portion (i.e., the first body is a channel-shaped bow that opens radially outward), and the second body is a second U-shaped portion that arches away from the upper surface portion 103 when in use (i.e., the second body is a substantially plate-shaped bow). In use, the second U-shaped portion as the second body is connected in a form-fitting manner from the radially outer side of the first flange of the first body to the radially outer edge of the first flange so that the connecting position of the first body and the second body is located at the radially outer edge of the axial side wall of the hood portion formed by connecting the second body to the first body.

Preferably, the second U-shaped portion as the second body may include a second flange (i.e., a second flange) extending radially inward along the second U-shaped portion. The second flange of the second U-shaped portion may, for example, engage on an outer surface of the first flange of the first body (i.e., the second flange encloses a radially outer edge of the first body) when the second U-shaped portion is connected to the outer edge of the first flange of the first body.

According to another modified example of the present disclosure, the first body includes a first U-shaped portion that arches away from the upper surface portion and a first flange that extends radially outward from the first U-shaped portion (i.e., the first body is a channel-shaped bow that opens radially outward), and the second body includes a second U-shaped portion that arches away from the upper surface portion in use and a second flange that extends radially inward from the second U-shaped portion (i.e., the second body is a channel-shaped bow that opens radially inward). In use, the second flange is connected to the first flange in a form-fitting manner from a radially outer side of the first flange, so that the connection location of the first body to the second body is located on a portion of the axial side wall of the shroud portion formed by connecting the second body to the first body, between the radially outer edge and the radially inner edge.

According to the case provided by the foregoing modified example of the present disclosure, the cover portions are each formed as an arcuate portion that arches away from the upper surface portion of the base portion when in use, and the second body is connected to the first body from the radially outer side of the first body when in use, so that the connection position of the first body and the second body is located at the outer periphery (outside) of the cover portion, thereby making it possible to effectively isolate the natural frequency of the case from the driving frequency of the measurement pipe of the mass flow meter while reducing the use of materials, while also making it possible to easily achieve welding or bonding of the first body and the second body.

Further, although the embodiment and the modified example in which the second body of the cover portion is disposed radially outward of the first body have been described previously, it should be noted that the embodiment of the present disclosure is not limited thereto. For example, in an exemplary embodiment, the first body and the second body of the cover part may also be designed to be connected in the axial direction. In other words, in addition to the cover portions arranged "up and down" disclosed in the foregoing embodiments, the present disclosure may also be implemented by cover portions arranged "front and back", as long as the connecting position of the first body and the second body of the cover portion is located at the outer periphery of the cover portion in use.

Further, instead of having the connection locations located on the axial side walls of the cover portion (including its radially inner and outer edges), it is also conceivable to configure the housing according to the present disclosure such that the connection locations are located on the radial outer peripheral wall of the cover portion.

Additionally, although the above is specifically directed to mass flowmeters, it is contemplated that the housing of the present disclosure may also be adapted for use with other flowmeters or even meters other than flowmeters, so long as the meters are provided with elbow components that require the housing to be protected.

In addition, although the housing is specifically described above as including a base portion, it is contemplated that the housing of the present disclosure may omit the base portion and be provided with only a cover portion formed as an arcuate portion. In this case, both ends of the cap portion may be provided with an inlet flow diverter and an outlet flow diverter for introducing and withdrawing the measurement fluid, respectively, and both ends of the cap portion may be directly connected to other suitable fixing members.

In addition, the present disclosure also provides a flow meter including the casing as described above. The flow meter may be a mass flow meter, in particular a coriolis mass flow meter with a measuring tube (also referred to as flow tube or vibrating tube and for example two) in the shape of a bend. In a preferred example, the flow meter may further comprise a proximal flow splitter and a distal flow splitter disposed at the proximal end and the distal end, respectively, of the base portion of the housing, the upstream end and the downstream end of the measurement tube being connectable to the proximal flow splitter and the distal flow splitter, respectively. Thus, the measurement fluid may flow into the proximal flow splitter, through the measurement tube, and out of the distal flow splitter.

In the present document, the use of directional terms such as "upper", "lower", "distal", and "proximal" is for convenience of description only and should not be taken as limiting. While the present disclosure has been described with reference to exemplary embodiments, it is to be understood that the disclosure is not limited to the specific embodiments described and illustrated in detail herein. Various modifications may be made to the exemplary embodiments by those skilled in the art without departing from the scope of the disclosure as defined in the claims.

Features mentioned and/or shown in the above description of exemplary embodiments of the disclosure may be combined in the same or similar manner in one or more other embodiments, in combination with or instead of the corresponding features in the other embodiments. Such combined or substituted embodiments should also be considered as included within the scope of the present disclosure.