CN202582625U

CN202582625U - Coriolis flow meter

Info

Publication number: CN202582625U
Application number: CN 201220016506
Authority: CN
Inventors: 赵恒�; 徐迎雪
Original assignee: Emerson Process Management Flow Technologies Co Ltd
Current assignee: Emerson Process Management Flow Technologies Co Ltd
Priority date: 2012-01-13
Filing date: 2012-01-13
Publication date: 2012-12-05
Anticipated expiration: 2022-01-13

Abstract

The utility model provides a Coriolis flow meter. The Coriolis flow meter comprises an input unit and an output unit, wherein the input unit is provided with a fluid inlet and used for leading fluid in a fluid channel into the flow meter along the direction of the fluid inlet; the output unit is provided with a fluid outlet and used for draining the fluid from the flow meter along the direction of the fluid outlet; and an included angle between the direction of the fluid inlet and the direction of the fluid outlet is more than 0 DEG and less than 180 DEG.

Description

Coriolis flowmeter

Technical field

The utility model relates to the measurement of fluid flow field, relates in particular to a kind of coriolis flowmeter.

Background technology

Advantages such as its accuracy of measurement of coriolis meter is high, measurable flow body scope is wide have obtained using widely.For for simplicity, do not specify that " flowmeter " of hereafter also refers to coriolis flowmeter if having.

Usually, coriolis flowmeter can be divided into two parts by function: Sensor section and transmitter part.Sensor section is used for direct or indirect sensing fluid at the mobile suffered Coriolis force of measuring tube, and is converted into electric signal, sends to the transmitter part.Processor in the transmitter part will be combined with other parameter by the sensing result that Sensor section obtains, the flow of Fluid Computation, and result of calculation exported.For for simplicity, the transmitter part of not shown flowmeter in the appended Figure of description.

Fig. 1 is the synoptic diagram that the structure of the current coriolis flowmeter 100 that generally uses is shown.As shown in fig. 1, flowmeter 100 comprises that fluid importation 101 and fluid output part divide 103.Fluid importation 101 comprises that the guiding fluid gets into the fluid inlet of flowmeter, and its direction illustrates with arrow 101d.Fluid output part divides 103 to comprise the guiding fluid from the inner outlet of discharging of flowmeter, and its direction illustrates with arrow 103d.As shown in fig. 1, fluid inlet direction 101d is identical with the direction of fluid egress point direction 103d.In other words, fluid inlet direction 101d and fluid egress point direction 103d between angle be 0 °.

The utility model content

The existing coriolis flowmeter of describing with reference to figure 1 can be arranged in the straight fluid channel easily.But this flowmeter can't directly apply to the corner of fluid passage.And, when the fluid passage has the turning,, make that the whole crushing of flow system is bigger owing to have turning pressure drop and meter pressure drop simultaneously.

The purpose of the utility model provides a kind of coriolis flowmeter, makes this flowmeter can directly apply to the corner of fluid passage, and reduces the whole crushing of flow system.

An embodiment of the utility model is a kind of coriolis flowmeter.This coriolis flowmeter comprises: have the input block of fluid inlet, be used for the direction introducing flowmeter with the fluid longshore current body import of fluid passage; And the output unit with fluid egress point, be used for the direction of fluid longshore current body outlet is discharged from flowmeter.The angle of the direction of fluid inlet and the direction of fluid egress point is greater than 0 ° and less than 180 °.

When using the embodiment of the utility model, can according to the corner angle of the fluid passage that will install confirm the occurrence of α.Thereby the angle of the direction of the fluid inlet through suitably arranging flowmeter and the direction of fluid egress point allows flowmeter to be directly installed on the corner of fluid passage, thereby effectively reduces the whole crushing of flow system.

Description of drawings

With reference to below in conjunction with the explanation of accompanying drawing, can understand the above of the utility model and other purpose, characteristics and advantage to the utility model embodiment with being more prone to.In the accompanying drawings, technical characterictic or parts identical or correspondence will adopt identical or corresponding Reference numeral to represent.Needn't go out the size and the relative position of unit in the accompanying drawings according to scale.

Fig. 1 is the synoptic diagram that the structure of the current coriolis flowmeter that generally uses is shown.

Fig. 2 is the synoptic diagram that illustrates according to the structure of the coriolis flowmeter of the utility model embodiment.

Fig. 3 is the skeleton view that illustrates according to the Sensor section of the coriolis flowmeter of the utility model embodiment.

Fig. 4 (a) and Fig. 4 (b) are coriolis flowmeters that prior art is shown respectively and synoptic diagram according to the installation situation of the flowmeter of the utility model embodiment.

Embodiment

The embodiment of the utility model is described with reference to the accompanying drawings.Should be noted that for purpose clearly, omitted in accompanying drawing and the explanation and the utility model expression and description irrelevant, parts well known by persons skilled in the art and processing.

In an embodiment of the utility model, a kind of coriolis flowmeter is provided, it comprises: have the input block of fluid inlet, be used for the direction introducing flowmeter with the fluid longshore current body import of fluid passage; And the output unit with fluid egress point, be used for the direction of fluid longshore current body outlet is discharged from flowmeter.Wherein, the angle of the direction of fluid inlet and the direction of fluid egress point is α, and 0 ° of < < 180 ° of α.

The fluid of flow to be measured can but for example be liquid without restriction such as water, gasoline, former wet goods, perhaps such as the gas of rock gas, oxygen etc.Correspondingly, the fluid passage can but be the transfer canal that for example transmits water, gasoline etc. without restriction, or the major diameter Crude Oil Transportation pipe of remote conveying crude oil.Equally, the fluid passage also can but for example be the various pipelines of carrying such as rock gas, oxygen etc. without restriction.Certainly, the fluid passage also can be the non-enclosed pipeline such as water channel.

Angle between the direction of the direction of the fluid inlet of input block and the fluid egress point of output unit can be selected between 180 ° at 0 °.

Specifically, can select the size of angle according to the angle at known fluid passage turning.For example, when the turning of fluid passage was 60 °, 90 ° and 120 ° respectively, adaptably, the angle with the direction of the direction of the fluid inlet of flowmeter and fluid egress point was chosen as 60 °, 90 ° and 120 ° respectively.Obviously, when the turning of known fluid passage is other angle, also can the angle of the direction of the direction of the fluid inlet of flowmeter and fluid egress point be chosen as 0 ° to 180 ° other angle in the scope.

Under or the situation about adapting identical in the angle at the fluid inlet direction of flowmeter and fluid egress point direction and turning, fluid passage, flowmeter can be directly installed on the corner of fluid passage.In this case, the turning pressure drop of fluid passage and the pressure drop of the flowmeter in the straight channel itself are replaced by independent meter pressure drop, thereby have reduced the pressure loss of total system.

More particularly; Though according to the utility model embodiment; Fluid inlet direction and fluid egress point direction to flowmeter are set, and make its angle in 0 ° to 180 ° scope, still; Angle is 0 ° a situation in the prior art, still can adopt habitual shape and structure according to the measuring tube (such as vibrating tube) of the flowmeter of the utility model embodiment.Thereby, to compare with existing flowmeter according to the flowmeter of the utility model embodiment, its pressure drop can't raise or significantly raise.Thereby, directly it is installed in fluid passage corner, not only eliminate the turning pressure drop, and do not caused the rising of other pressure drop, thereby made total crushing of system reduce.

Certainly; Angle is 0 ° a situation in the prior art; According to the flowmeter of the utility model embodiment, the design of its measuring tube and shell etc. and layout also can be adapted to the setting of the angle of fluid inlet and fluid egress point, adjust according to specific use and design demand.Hereinafter will illustrate with reference to figure 3.

Coriolis flowmeter according to the utility model embodiment can also comprise: such as the measuring tube of vibrating tube, be used to produce Coriolis effect, so that can use the Coriolis principle to measure the flow of fluid; Sensing device is used for data such as sensing Coriolis force or moment of torsion directly or indirectly, and is that electric signal sends data processor to these data conversion; Data processor is used for the data that obtain from sensing device are handled, and based on the flow of known parameters Fluid Computation; Communicator is used for the flow rate calculation result is outputed to user side.In the accompanying drawings, for for simplicity, with omitting the assembly of not discussing in above-mentioned each assembly.

In view of in current practical application, 90 ° turning, fluid passage is comparatively common, hereinafter, and the instance in the time of will getting 90 ° referring to figs. 2 and 3 explanation α.

Fig. 2 be illustrate according to the utility model embodiment, its fluid inlet direction and fluid egress point angular separation be the synoptic diagram of structure of 90 ° flowmeter 200.Flowmeter 200 comprises: have the input block 201 of fluid inlet, be used for direction (arrow 201d) the introducing flowmeter with the fluid longshore current body import of fluid passage; And the output unit 203 with fluid egress point, be used for the direction (arrow 203d) of fluid longshore current body outlet is discharged from flowmeter 200.Can visually see from Fig. 2, fluid inlet direction 201d is vertical with fluid egress point direction 203d.In other words, fluid inlet direction 201d becomes 90 ° with the angle of fluid egress point direction 203d.

Fig. 3 is the skeleton view that schematically shows with the entity of flowmeter 200 corresponding flowmeters 300 shown in Figure 2.Input block 301 is corresponding to the input block 201 of flowmeter 200.Output unit 303 is corresponding to the output unit 203 of flowmeter 200.In the present embodiment, input block 301 includes the shunt of fluid being introduced each measuring tube respectively with output unit 303.By visible among Fig. 3, the direction of the direction of the fluid inlet of input block 301 and the fluid egress point of output unit 303 is vertical basically.

As shown in Figure 3, flowmeter 300 also comprises table body 302a, and is arranged at the measuring tube 302b such as vibrating tube among the table body 302a.In embodiment according to Fig. 3, be suitable for 90 ° fluid inlet and fluid egress point angle, measuring tube 302b is configured to have into 90 ° bend.In addition, in this embodiment, table body 302a also is configured to have the bend of 90 ° of bendings.

Need to prove: measuring tube has into 90 ° bend, is preferred embodiment a kind of.The measuring tube of other shape; Can satisfy the requirement of the utility model equally such as U-shaped, S shape etc.; Angle between needing only fluid inlet and exporting becomes 90 °, or according to the fluid passage corner angle, as long as the angle between fluid inlet and the outlet is positioned at 0 ° to 180 ° scope.

The exemplary situation of using double hose measuring tube (vibrating tube) that shows among Fig. 3.Without restriction, also can use the single hose measuring tube, or the form of any measuring tube of this area use.

Hereinafter will compare installation site difference and relative merits in detail with reference to figure 4a and Fig. 4 b according to the flowmeter and the flowmeter of the prior art of the utility model.

Fig. 4 a and Fig. 4 b illustrate flowmeter of the prior art and synoptic diagram according to the installation situation of the coriolis flowmeter of the utility model embodiment respectively.

The fluid inlet of traditional flowmeter and Way out point-blank, promptly fluid inlet becomes 0 ° of angle with Way out.Thereby traditional flowmeter only is fit to be installed in the linear fluid passage.Shown in Fig. 4 a, when having the turning,, also can only flowmeter be installed in the straight channel at contiguous turning even desire is measured the rate of flow of fluid of corner in the fluid passage.In this case, the overall pressure drop of system (total crushing) be turning pressure drop ↓ P turning and the pressure drop of flowmeter ↓ P meter own and.

Under the situation of use according to the flowmeter of the utility model embodiment; Because according to the angle of the fluid inlet of the flowmeter of the utility model and Way out is (for example being 90 °) according to the angle manufacturing at the turning of the fluid passage that will be applied to; So can flowmeter be directly installed on fluid passage corner, shown in Fig. 4 b.In this case, the overall pressure drop of system (total crushing) is the pressure drop ↓ P of this flowmeter itself only.Thereby total crushing of system has been lowered.

In another embodiment of the utility model, a kind of method of making coriolis flowmeter mentioned above is provided.This method comprises: the structure coriolis flowmeter, make that the angle of direction of fluid egress point of direction and output unit of fluid inlet of input block is α, and 0 ° of < < 180 ° of α.

Under the situation of the number of degrees of the angle of having confirmed fluid inlet and fluid egress point, can adopt this area habitual various building methods and manufacturing process to the structure of coriolis flowmeter with this angle.Those skilled in the art can select according to application and design demand.

The occurrence of α can according to flowmeter the corner angle of fluid passage of the fluid delivery system that will be applied to confirm.Current, the fluid passage has 90 ° turning usually, thereby, during fabrication, can the angle of the fluid egress point direction of the fluid inlet direction of the input block of flowmeter and output unit be configured to 90 °.

Be adapted to the angle of fluid inlet direction and Way out is configured to 90 °; Alternatively; Can also the measuring tube that being used to of comprising in the coriolis flowmeter produces Coriolis effect be configured to comprise into 90 ° bend, that kind that goes out as shown in Figure 3.

Be adapted to the different set of angle, the measuring tube of flowmeter and shell etc. also can suitably be adjusted.This can be confirmed according to the design and use needs by those skilled in the art.

With reference to specific embodiment the utility model has been described in the instructions in front.Yet those of ordinary skill in the art understands, and under the prerequisite of the scope that does not depart from the utility model that limits like claims, can carry out various modifications and change.

Claims

1. coriolis flowmeter comprises:

Input block with fluid inlet is used for the fluid of fluid passage is introduced said flowmeter along the direction of said fluid inlet; And

Output unit with fluid egress point is used for fluid is discharged from said flowmeter along the direction of said fluid egress point;

Wherein, the angle of the direction of the direction of said fluid inlet and said fluid egress point is greater than 0 ° and less than 180 °.

2. coriolis flowmeter according to claim 1, wherein, the angle of the direction of said fluid inlet and the direction of said fluid egress point is 90 °.

3. coriolis flowmeter according to claim 2, wherein, said coriolis flowmeter comprises the measuring tube that is used to produce Coriolis effect, said measuring tube comprises into 90 ° bend.