CN212513163U - Nozzle flowmeter - Google Patents
Nozzle flowmeter Download PDFInfo
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- CN212513163U CN212513163U CN202021527652.8U CN202021527652U CN212513163U CN 212513163 U CN212513163 U CN 212513163U CN 202021527652 U CN202021527652 U CN 202021527652U CN 212513163 U CN212513163 U CN 212513163U
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- piston
- nozzle
- piston cylinder
- flow meter
- pressure
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Abstract
The utility model provides a nozzle flowmeter measures the flow size when fluid flow through throttling arrangement through measuring pressure differential. The utility model relates to a nozzle flowmeter's technical scheme includes: the piston assembly comprises a piston rod, a piston and a piston cylinder, the piston rod is connected with the piston, the piston reciprocates in the piston cylinder, and the piston cylinder is provided with an air inlet valve and an air outlet valve; survey buret, survey buret with the air outlet valve intercommunication, be equipped with the chamber of flowing in surveying buret, the intracavity that flows is equipped with the nozzle, the nozzle cross-section is the splayed that reduces gradually along flow direction sectional area.
Description
Technical Field
The utility model relates to a throttle formula flowmeter technical field, concretely relates to nozzle flowmeter.
Background
The nozzle flowmeter is a differential pressure generating device for measuring flow, and can measure the flow of various fluids in a pipeline by matching with various differential pressure meters or differential pressure transmitters. The standard nozzle throttling device is matched with a differential pressure transmitter for use, can measure the flow of liquid, steam and gas, and is widely applied to the departments of petroleum, chemical industry, metallurgy, electric power, light industry and the like.
The nozzle flow meter still needs to be improved in the aspects of accurate measurement of air inflow and connection of an air path system.
SUMMERY OF THE UTILITY MODEL
The utility model provides a nozzle flowmeter measures the flow size when fluid flow through throttling arrangement through measuring pressure differential.
The utility model relates to a nozzle flowmeter's technical scheme includes:
the piston assembly comprises a piston rod, a piston and a piston cylinder, the piston rod is connected with the piston, the piston reciprocates in the piston cylinder, and the piston cylinder is provided with an air inlet valve and an air outlet valve;
survey buret, survey buret with the air outlet valve intercommunication, be equipped with the chamber of flowing in surveying buret, the intracavity that flows is equipped with the nozzle, the nozzle cross-section is the splayed that reduces gradually along flow direction sectional area.
Preferably, the first and second liquid crystal materials are,
the nozzle will survey buret branch for preceding survey buret and back survey buret, preceding survey buret is last to be connected with and to get pressure pipeline one, back survey buret is last to be connected with and to get pressure pipeline two, get pressure pipeline one with it connects respectively in same differential pressure gauge to get pressure pipeline two.
Preferably, the first and second liquid crystal materials are,
the cross section of the flow cavity perpendicular to the flow direction is circular.
Preferably, the first and second liquid crystal materials are,
the nozzle flowmeter further comprises a driving motor and a lead screw, the driving motor is connected with the lead screw, and the piston rod surrounds the lead screw.
Preferably, the first and second liquid crystal materials are,
the driving motor is connected with the lead screw through a coupler.
Preferably, the first and second liquid crystal materials are,
and a pressure sensor and a temperature sensor are arranged on the piston, and the pressure sensor and the temperature sensor extend into a cavity between the piston and the bottom wall of the piston cylinder.
Preferably, the first and second liquid crystal materials are,
the air inlet valve and the air outlet valve are located on the same side of the bottom wall of the piston cylinder.
The beneficial effect of adopting above-mentioned technical scheme is:
fluid in a full pipe flows through a throttling device in a pipeline, a flow beam contracts at a throttling element, the flow speed is increased, dynamic pressure energy and static pressure energy can be mutually converted under certain conditions according to an energy conservation law and a flow continuity equation, and the static pressure energy is necessarily reduced as a result of the acceleration of the flow speed, so that a static pressure difference (or called differential pressure) is generated before and after the throttling element. The greater the flow velocity of the fluid, the greater the differential pressure generated before and after the throttling element, so the magnitude of the flow of the fluid through the throttling device can be measured by measuring the differential pressure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a structural diagram of a nozzle flowmeter according to the present invention.
Detailed Description
The utility model provides a nozzle flowmeter measures the flow size when fluid flow through throttling arrangement through measuring pressure differential.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The utility model relates to a nozzle flowmeter's technical scheme includes:
the piston assembly comprises a piston rod 6, a piston 9 and a piston cylinder 10, wherein the piston rod 6 is connected with the piston 9, the piston 9 reciprocates in the piston cylinder 10, and an air inlet valve 11 and an air outlet valve are arranged on the piston cylinder 10.
The measuring pipe 12 is arranged, the measuring pipe 12 is communicated with the air outlet valve, a flowing cavity is arranged in the measuring pipe 12, a nozzle 16 is arranged in the flowing cavity, and the cross section of the nozzle 16 is in a splayed shape with the sectional area gradually reduced along the flowing direction.
The nozzle 16 divides the measuring pipe 12 into a front measuring pipe and a rear measuring pipe, the front measuring pipe is connected with a first pressure taking pipeline 14, the rear measuring pipe is connected with a second pressure taking pipeline 13, the first pressure taking pipeline 14 and the second pressure taking pipeline 13 are respectively connected to the same differential pressure gauge 15, and the first pressure taking pipeline 14 and the second pressure taking pipeline 13 are respectively provided with an electromagnetic valve.
The nozzle flowmeter further comprises a driving motor 1 and a lead screw 4, the driving motor 1 is connected with the lead screw 4 through a coupler 2, and a piston rod 6 surrounds the lead screw 4.
And a pressure sensor 8 and a temperature sensor 7 are arranged on the piston 9, and the pressure sensor 8 and the temperature sensor 7 extend into a cavity between the piston 9 and the bottom wall of the piston cylinder 10.
The air inlet valve 11 and the air outlet valve 12 are positioned on the same side of the bottom wall of the piston cylinder.
A flow chamber is arranged in the measuring tube 12, and the cross section of the flow chamber perpendicular to the direction of the gas flow is circular.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. A nozzle flow meter, comprising:
the piston assembly comprises a piston rod, a piston and a piston cylinder, the piston rod is connected with the piston, the piston reciprocates in the piston cylinder, and the piston cylinder is provided with an air inlet valve and an air outlet valve;
survey buret, survey buret with the air outlet valve intercommunication, be equipped with the chamber of flowing in surveying buret, the intracavity that flows is equipped with the nozzle, the nozzle cross-section is the splayed that reduces gradually along flow direction sectional area.
2. The nozzle flow meter according to claim 1, wherein the nozzle divides the measuring tube into a front measuring tube and a rear measuring tube, a first pressure tapping line is connected to the front measuring tube, a second pressure tapping line is connected to the rear measuring tube, and the first pressure tapping line and the second pressure tapping line are respectively connected to the same differential pressure gauge.
3. A nozzle flow meter according to claim 1, wherein the cross-section of the flow chamber perpendicular to the direction of flow is circular.
4. The jet flowmeter of claim 1, further comprising a drive motor, a lead screw, the drive motor coupled to the lead screw, the piston rod surrounding the lead screw.
5. The nozzle flow meter of claim 4, wherein the drive motor is coupled to the lead screw via a coupling.
6. The nozzle flow meter of claim 1, wherein the piston is provided with a pressure sensor and a temperature sensor, the pressure sensor and the temperature sensor extending into the cavity between the piston and the bottom wall of the piston cylinder.
7. The nozzle flow meter of claim 1, wherein the air inlet valve and the air outlet valve are located on the same side of the bottom wall of the piston cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021527652.8U CN212513163U (en) | 2020-07-29 | 2020-07-29 | Nozzle flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021527652.8U CN212513163U (en) | 2020-07-29 | 2020-07-29 | Nozzle flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212513163U true CN212513163U (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021527652.8U Active CN212513163U (en) | 2020-07-29 | 2020-07-29 | Nozzle flowmeter |
Country Status (1)
| Country | Link |
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| CN (1) | CN212513163U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114734369A (en) * | 2022-06-13 | 2022-07-12 | 中国航发上海商用航空发动机制造有限责任公司 | Pressurizing container, pressurizing device, finishing device and pressurizing method of hydraulic oil |
-
2020
- 2020-07-29 CN CN202021527652.8U patent/CN212513163U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114734369A (en) * | 2022-06-13 | 2022-07-12 | 中国航发上海商用航空发动机制造有限责任公司 | Pressurizing container, pressurizing device, finishing device and pressurizing method of hydraulic oil |
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