CN212179991U - Shunting gas flow measuring device - Google Patents

Abstract

The application provides a shunting gas flow measuring device, which comprises an outer shell, be provided with the gas access in the shell, be provided with measuring mechanism in the gas access set up the control mechanism who changes air flow state in the gas access, measuring mechanism with the control mechanism cooperation sets up, divide into the different the control unit of a plurality of sectional areas among the control mechanism, a plurality of measuring mechanism set up in among the control unit. Measuring mechanism measures the air in the gas passage in this application, is provided with the different control unit of cross-sectional area among the control mechanism for when the air flows through the control unit of different cross-sectional areas, the velocity of flow is different, through the physical demarcation, makes can be convenient carry out multiple spot measurement and control, and is more accurate to the measuring result of air flow.

Description

Shunting gas flow measuring device

Technical Field

The present application relates to a split-flow gas flow measuring device.

Background

The fuel engine needs proper fuel oil or fuel gas and air to be mixed and combusted and exploded to generate power. In an intake system of a general fuel engine, air is filtered by an air cleaner, and then flows through an air flow meter and the like via an intake pipe and enters a combustion chamber. Traditional air flow meter includes the shell, and the inside gas passage that is provided with of shell, the inside flow measuring head that is provided with of gas passage, this type of flow measuring head mainly used measure the gas volume of flowing through, because the distribution of whole cavity can't be collected to the measuring head, and under the great condition of cavity, more can not measure more representative value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a shunting gas flow measuring device, which comprises a housing, a gas passage is arranged in the housing, a measuring mechanism is arranged in the gas passage, a control mechanism for changing the flowing state of air is arranged in the gas passage, the measuring mechanism is matched with the control mechanism, the control mechanism is divided into a plurality of control units with different sectional areas, and the measuring mechanisms are arranged in the control units. Measuring mechanism measures the air in the gas passage in this application, is provided with the different control unit of cross-sectional area among the control mechanism for when the air flows through the control unit of different cross-sectional areas, the velocity of flow is different, through the physical demarcation, makes can be convenient carry out multiple spot measurement and control, and is more accurate to the measuring result of air flow.

Further, including the control piece in the control unit, the control piece with the gas access inner wall links to each other, the control piece with there are a plurality of gaps between the gas access, include the different through-hole of a plurality of sectional areas in the control piece, a plurality of measuring mechanism set up in the through-hole. Because the control piece includes the through-hole that a plurality of cross-sectional areas are different, be provided with the gap between control piece and the gas passage for the air is cut apart into the part that a plurality of velocity of flow are different when passing through the control piece, and measuring mechanism measures the air of different velocity of flow, integrates different values finally, makes the measuring result more accurate than measuring single value.

Further, the measuring mechanism comprises a body and a measuring head which are connected, a channel used for the measuring mechanism to pass through is arranged on the shell, the channel comprises a first channel through which the measuring head passes and a second channel through which the body passes, the first channel is communicated with the second channel, and the measuring head extends into the through hole. The measuring head in this application directly stretches into in the through-hole for the test result is more accurate.

Furthermore, the control piece comprises a first curved edge, a second curved edge and a third curved edge, one end of the first curved edge is connected with one end of the second curved edge, the other end of the second curved edge is connected with one end of the third curved edge, and the other end of the third curved edge is connected with the other end of the first curved edge.

Further, the control piece is equilateral pentagon setting, the control piece with the gas access inner wall links to each other, set up a plurality of connecting pieces in the control piece, the control piece with there is the gap between the gas access, including first through-hole, second through-hole and third through-hole in the control piece.

Furthermore, the control piece is the equilateral hexagon setting, the control piece with the gas access links to each other, be provided with a plurality of connecting plates in the control piece, including first through-hole, second through-hole and third through-hole in the control piece.

Furthermore, the gas passage comprises a first bending part and a second bending part, a first guide plate is arranged on the inner side of the first bending part, and a second guide plate is arranged at the second bending part. The first guide plate and the second guide plate can guide air and prevent condensed water from accumulating to block the gas passage.

Furthermore, a chamfer is arranged at the joint of the first guide plate and the inner wall of the gas passage, and a chamfer is arranged at the joint of the second guide plate and the inner wall of the gas passage. The chamfer angle is arranged, so that the effects of guiding air and preventing condensed water from accumulating are better achieved.

The beneficial effect of this application is as follows:

1. the measuring mechanism measures the air in the air passage, and the control mechanism is provided with the control units with different cross sectional areas, so that when the air flows through the control units with different cross sectional areas, the flow rates are different, and the measuring result of the air flow is more accurate;

2. in the application, the control part comprises a plurality of through holes with different cross-sectional areas, a gap is arranged between the control part and the gas passage, so that air is divided into a plurality of parts with different flow rates when passing through the control part, the measuring mechanism measures the air with different flow rates, and finally different values are integrated, so that the measuring result is more accurate than a single value;

3. the measuring head in the application is directly extended into the through hole, so that the test result is more accurate;

4. the first guide plate and the second guide plate can guide air on one hand and prevent condensed water from accumulating to block the gas passage on the other hand;

5. the setting of chamfer on this application guide plate, better plays the effect that the water conservancy diversion was gathered and prevent the comdenstion water to the air.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of a split-flow gas flow measuring device of the present application;

FIG. 2 is a schematic view of the structure of the measuring mechanism of the present application;

FIG. 3 is a schematic diagram of the structure of the gas passages in the present application;

FIG. 4 is a schematic structural view of a control member of the present application;

FIG. 5 is a schematic view of another control element of the present application;

fig. 6 is a schematic structural diagram of another control element in the present application.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the present embodiment, as shown in fig. 1, a flow-dividing gas flow measuring apparatus includes a housing 1, a gas passage 2 is provided in the housing 1, a measuring mechanism 3 is provided in the gas passage 2, a control mechanism 4 for changing a flow state of air is provided in the gas passage 2, the measuring mechanism 3 is provided in cooperation with the control mechanism 4, the control mechanism 4 is divided into a plurality of control units 41 having different cross-sectional areas, and the plurality of measuring mechanisms 3 are provided in the control units 41. The control unit 41 includes a control member 42, the control member 42 is connected to the gas passage 2, a plurality of gaps 421 are formed between the control member 42 and the gas passage 2, the control member 42 includes a plurality of through holes 422 having different sectional areas, and the plurality of measuring mechanisms 3 are disposed in the through holes 422. As shown in fig. 2, the measuring mechanism 3 includes a sampling body 31 and a measuring head 32, the housing 1 is provided with a passage 11 for the measuring mechanism 3 to pass through, the passage 11 includes a first passage 111 for the measuring head 32 to pass through, and also includes a second passage 112 for the body 31 to pass through, the first passage 111 and the second passage 112 are communicated, and the measuring head 32 extends into the through hole 422. As shown in fig. 4, the control member 42 includes a first curved edge 421, a second curved edge 422 and a third curved edge 423, wherein one end of the first curved edge 421 is connected to one end of the second curved edge 422, the other end of the second curved edge 422 is connected to one end of the third curved edge 423, and the other end of the third curved edge 423 is connected to the other end of the first curved edge 421. As shown in fig. 5, the control member 42 is an equilateral pentagon 421, the control member 42 is connected to the gas passage 2, the control member 42 is provided with a plurality of connecting members 421, a gap 421 is formed between the control member 42 and the gas passage 2, and the control member 42 includes a first through hole 4221, a second through hole 4222, and a third through hole 4223. As shown in fig. 6, the control member 42 is provided with an equilateral hexagon 423, the control member 42 is connected to the gas passage 2, the second control member 42 is provided with a plurality of connecting plates 424, and the control member 42 includes a first through hole 4221, a second through hole 4222 and a third through hole 4223. As shown in fig. 3, the gas passage 2 includes a first bent portion 21 and a second bent portion 22, a first baffle 211 is disposed inside the first bent portion 21, and a second baffle 221 is disposed at the second bent portion 22. The junction of the first baffle 211 and the inner wall of the gas passage 2 is provided with a chamfer, and the junction of the second baffle 221 and the inner wall of the gas passage 2 is provided with a chamfer.

When the air flow meter is used, air enters the fuel engine from the air inlet pipe through the air flow meter, the throttle valve and the like, when the air flows to the air flow meter of the air flow meter, measured air enters from the inlet of the air channel 11, the measured air passes through the control unit 41 in the air channel 11, the measured air passes through the through holes 422 with different cross-sectional areas in the control part 42 and is divided into a plurality of parts with different flow rates, the air flow rate flowing to the through holes 422 with small cross-sectional areas is larger than the air flow rate flowing to the through holes 422 with large cross-sectional areas, mixed air flow is reduced, flow control of the air entering the engine is carried out more accurately, and therefore the combustion efficiency of fuel.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (6)

1. A split-flow gas flow measurement device, comprising:

the measuring device comprises a shell, a measuring mechanism and a measuring mechanism, wherein a gas passage is arranged in the shell; the measuring mechanism comprises a body and a measuring head which are connected, a channel for the measuring mechanism to pass through is arranged on the shell, the channel comprises a first channel for the measuring head to pass through and a second channel for the body to pass through, and the first channel is communicated with the second channel;

a control mechanism for changing the flowing state of air is arranged in the gas passage, the measuring mechanism is matched with the control mechanism, the control mechanism comprises a plurality of control units with different cross sections, and a plurality of measuring mechanisms are arranged in the control units; the control unit comprises a control piece, the control piece is connected with the inner wall of the gas passage, a plurality of gaps are formed between the control piece and the gas passage, the control piece comprises a plurality of through holes with different cross-sectional areas, the measuring mechanisms are arranged in the through holes, and the measuring heads stretch into the through holes.

2. A flow-splitting gas flow measuring device according to claim 1, wherein said control member includes a first curved edge, a second curved edge and a third curved edge, said first curved edge being connected at one end to said second curved edge, said second curved edge being connected at another end to said third curved edge, said third curved edge being connected at another end to said first curved edge.

3. A flow-dividing gas flow measuring device according to claim 1, wherein said control member is formed as an equilateral pentagon, said control member is connected to an inner wall of said gas passageway, said control member has a plurality of connecting members formed therein, said control member has a gap with said gas passageway, and said control member includes a first through hole, a second through hole, and a third through hole.

4. A flow-splitting gas flow measuring device according to claim 1, wherein said control member is disposed in an equilateral hexagon and is connected to said gas passageway, and wherein said control member has a plurality of connecting plates disposed therein, and wherein said control member includes a first through hole, a second through hole and a third through hole.

5. A flow-splitting gas flow measuring device according to claim 1, wherein the gas passage comprises a first bend and a second bend, a first baffle is disposed inside the first bend, and a second baffle is disposed at the second bend.

6. A split-flow gas flow measuring device according to claim 5, wherein the junction of said first baffle and said inner wall of said gas passageway is chamfered, and the junction of said second baffle and said inner wall of said gas passageway is chamfered.

Images