CN201852610U

CN201852610U - Casing of Coriolis mass flow sensor

Info

Publication number: CN201852610U
Application number: CN2010206065454U
Authority: CN
Inventors: 张岗; 陈火; 屈科兵; 李保鸿
Original assignee: DONGFENG ELECTROMECHANIC Co Ltd XI-AN
Current assignee: Xi'an Dongfeng electromechanical Limited by Share Ltd
Priority date: 2010-11-09
Filing date: 2010-11-09
Publication date: 2011-06-01
Anticipated expiration: 2020-11-09

Abstract

The utility model relates to a casing of a mass flow measuring device, particularly to a casing of a Coriolis mass flow sensor. The casing comprises a casing body and two end sockets, the casing body is U-shaped and has a runway-like circular cross section, and each end socket is connected with the two top ends of the U-shaped casing. Compared with the prior art, the casing has the advantages of compact structure, simple process and good rigidity, and is closer to the cross-sectional shape of a measuring tube than a round casing; the thickness of the casing is thinner than the thickness of a square casing; and the casing has small vibration plane and good shielding effect, and is suitable for the double U-shaped tube Coriolis mass flow sensor with the caliber DN50-DN250.

Description

A kind of Coriolis mass flow sensor shell

[technical field]

The utility model relates to a kind of shell of measuring mass flow device, relates in particular to a kind of Coriolis mass flow sensor shell.

[background technology]

Each motor product or instrument and meter all have shell, and its effect is to install and wrap and protect inner components and parts, and profile is attractive in appearance.The shell of Coriolis mass flow sensor is except installing and bag protects the inner components and parts, also having an even more important effect is the electromagnetic interference (EMI) of inside and outside transfer of vibration benefit of shield shell and outer room, these interference can cause the distortion of sensor acquisition signal, make the precise decreasing of instrument.

The maximum difference of the flowmeter of coriolis mass flowmeters (hereinafter to be referred as Coriolis mass flowmeter) and other type (as electromagnetism, ultrasonic, vortex street etc.) is, he in the course of the work measuring tube be outer state in vibration.When the import of fluid from coriolis mass flow sensor flows into, the coriolis force theory that produces on the measuring tube on import and outlet limit when outlet is flowed out is an opposite sign but equal magnitude, promptly make the vibration of measuring tube shift to an earlier date the oscillation hysteresis that makes measuring tube in inlet side on the outlet limit, so the vibration in outlet limit and inlet side has produced phase differential, the quality that coriolis force and fluid flow through so the coriolis force that this phase differential and fluid produce is directly proportional be directly proportional this phase differential promptly and the quality that flows through of fluid be directly proportional, Coriolis mass flowmeter carries out flow measurement by gather calculating this phase differential, the measuring principle of Here it is Coriolis mass flowmeter.As crossing the vibration interference that adds some outer rooms in the vibration of measuring tube, the signal that promptly collects has produced distortion makes measurement inaccurate.The kind of outer room vibration is a lot of as pipe vibration, motor, water pump, lathe or the like.The effect of shell is exactly that the vibration of these outer rooms can not be imported on the measuring tube of coriolis mass flow sensor inside, and vibration unreasonable as design of shell and measuring tube produces this Coriolis mass flowmeter of resonance with regard to cisco unity malfunction.

The shell of present coriolis mass flow sensor both domestic and external basically all the side's of being shell structure (promptly being spliced into body structure) with steel plate and the circle shell structure.Side's many costs of shell structure volume big use material height, so and have on the shell bigger plane produce vibration within it portion to increase support column and damping iron block etc., the complex process cost-effective is really also bad and should not produce in enormous quantities.The circle shell is reasonable in the effect aspect the vibration of isolation outer room, so but its employing of the Coriolis mass flow of double u-tube biography device is that two its sectional areas of measuring tube more approach ellipse and adopt round shell measuring tube in sensor inhomogeneous from the distance of shell, so effect neither be best.And the section form that adopts the runway circle can be more near the section form of measuring tube.

[summary of the invention]

The purpose of this utility model provides a kind of coriolis mass flow sensor shell, and this shell can more scientifically shield components and parts in it, and the signal that Coriolis mass flowmeter will be gathered is avoided the vibration interference of outer room.

A kind of Coriolis mass flow sensor shell described in the utility model, this shell is made up of housing and two end sockets, and described housing is a U-shaped, and each end socket links to each other with two tops of U-shaped housing respectively.

At one more preferably among the embodiment, its horizontal section of described housing is the runway circle.

Above-mentioned or another more preferably among the embodiment, its profile of described end socket is the runway circle.

In a further preferred embodiment, the minor axis of described housing horizontal section is: 120mm～320mm, major axis is: 160mm～430mm.

In a preferred embodiment, the thickness of described end socket is that 4～6mm, thickness of shell are 3～5mm.

In another preferred embodiment, the centre distance of two pipes is 356mm～800mm about described housing.Wherein most preferred centre distance is 356mm or 560mm or 560mm or 660mm or 700mm or 800mm.

In another preferred embodiment, the height of described housing is 522mm～1160mm.Wherein most preferred height is 522mm or 693mm or 780mm or 742mm or 992mm or 1160mm.

In another preferred embodiment, described housing is welded by two and half shells.

In another preferred embodiment, each end socket is weldingly connected with two tops of U-shaped housing respectively.

In another preferred embodiment, described end socket is provided with and the hole of dividing the fluid assembly welding.

The utility model advantage compared with prior art is, the shell structure compactness, than round shell more near the cross sectional shape of measuring tube, technology is simple, good rigidly, the thickness of housing is thinner with respect to square shell, and the shell vibration plane is little, shield effectiveness is good, goes for the shell of " double-H groove weld " type pipe coriolis mass flow sensor of DN50-DN250 bore.

[description of drawings]

Fig. 1 is the front view of embodiment one described Coriolis mass flow sensor shell;

Fig. 2 is the upward view of Fig. 1;

Fig. 3 is the vertical view of Fig. 1;

Fig. 4 is the side view of Fig. 1.

Among the figure, 1-end socket, 2-housing, 3-and the hole of dividing the fluid assembly welding.

[embodiment]

Embodiment one

A kind of Coriolis mass flow sensor shell of the present utility model, form by housing 2 and two end sockets 1, described housing 2 is the U-shapeds that are welded by two and half shells, each end socket 1 links to each other with two tops of U-shaped housing 2 respectively, preferred connected mode is welding, and the horizontal section of wherein said housing 2 and end socket 1 is the runway circle.

Embodiment two

As embodiment one described Coriolis mass flow sensor shell, the minor axis of its middle shell 2 horizontal sections is that 120mm, major axis are 160mm, and the centre distance of about 2 two pipes of housing is 356mm, and housing 2 highly is 522mm.

Embodiment three

As embodiment one described Coriolis mass flow sensor shell, the minor axis of its middle shell 2 horizontal sections is that 168mm, major axis are 224mm, and the centre distance of about 2 two pipes of housing is 560mm, and housing 2 highly is 693mm.

Embodiment four

As embodiment one described Coriolis mass flow sensor shell, the minor axis of its middle shell 2 horizontal sections is that 220mm, major axis are 290mm, and the centre distance of about 2 two pipes of housing is 560mm, and housing 2 highly is 780mm.

Embodiment five

As embodiment one described Coriolis mass flow sensor shell, the minor axis of its middle shell 2 horizontal sections is that 240mm, major axis are 320mm, and the centre distance of about 2 two pipes of housing is 660mm, and housing 2 highly is 742mm.

Embodiment six

As embodiment one described Coriolis mass flow sensor shell, the minor axis of its middle shell 2 horizontal sections is that 290mm, major axis are 380mm, and the centre distance of about 2 two pipes of housing is 700mm, and housing 2 highly is 992mm.

Embodiment seven

As embodiment one described Coriolis mass flow sensor shell, the minor axis of its middle shell 2 horizontal sections is that 320mm, major axis are 430mm, and the centre distance of about 2 two pipes of housing is 800mm, and housing 2 highly is 1160mm.

Claims

1. Coriolis mass flow sensor shell, this shell is made up of housing (2) and two end sockets (1), it is characterized in that described housing (2) is a U-shaped, and each end socket (1) links to each other with two tops of U-shaped housing (2) respectively.

2. Coriolis mass flow sensor shell as claimed in claim 1 is characterized in that its horizontal section of described housing (2) is the runway circle.

3. Coriolis mass flow sensor shell as claimed in claim 1 or 2 is characterized in that described end socket (1) profile is the runway circle.

4. Coriolis mass flow sensor shell as claimed in claim 3, it is characterized in that the minor axis of described housing (2) horizontal section is: 120mm～320mm, major axis is: 160mm～430mm.

5. Coriolis mass flow sensor shell as claimed in claim 4, the thickness that it is characterized in that described end socket (1) are that 4～6mm, housing (2) thickness are 3～5mm.

6. Coriolis mass flow sensor shell as claimed in claim 4, the centre distance that it is characterized in that two pipes about described housing (2) is 356mm～800mm.

7. Coriolis mass flow sensor shell as claimed in claim 4, the height that it is characterized in that described housing (2) is 522mm～1160mm.

8. Coriolis mass flow sensor shell as claimed in claim 4 is characterized in that described housing (2) is welded by two and half shells.

9. Coriolis mass flow sensor shell as claimed in claim 4 is characterized in that each end socket (1) is weldingly connected with two tops of U-shaped housing (2) respectively.

10. Coriolis mass flow sensor shell as claimed in claim 4 is characterized in that described end socket (1) is provided with and the hole (3) of dividing the fluid assembly welding.