CN219038081U

CN219038081U - Laminar flow structure of gas flow sensor

Info

Publication number: CN219038081U
Application number: CN202223521487.7U
Authority: CN
Inventors: 曾智杰; 魏东; 程晓梅
Original assignee: Guangzhou Winner Industrial Control Technology Co ltd
Current assignee: Guangzhou Winner Industrial Control Technology Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-16
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a laminar flow structure of a gas flow sensor, which belongs to the technical field of flow sensors and comprises a gas flow sensor body, wherein a base is arranged above the gas flow sensor body, a flow mark is arranged in the middle of the surface of the base, a limit fixed block is arranged on the left side of the flow mark, a gas flow outlet is arranged on the left side of the limit fixed block, a cover plate is arranged above the gas flow outlet, a capacitive element is fixed on the left upper side of the cover plate through a bolt, a connecting wire harness is connected on the right side of the capacitive element through a wire harness, a differential pressure sensor is connected on the right side of the connecting wire harness through the wire harness, an MCU is connected on the right side of the differential pressure sensor through the wire harness, a digital display screen is connected above the MCU through the wire harness, a sensor port is arranged below the right side of the digital display screen, a gas flow inlet is arranged below the sensor port, and a rectifier is arranged on the left inside the gas flow inlet; the laminar flow structure of the gas flow sensor has the advantages of reduced deviation, stable measurement coefficient and high accuracy.

Description

Laminar flow structure of gas flow sensor

Technical Field

The utility model relates to the technical field of flow sensors, in particular to a laminar flow structure of a gas flow sensor.

Background

With the development of technology and the improvement of life demands of people, the gas flow sensor is applied in various aspects of life, and related information such as the flow rate and the flow velocity of gas flow can be detected through the gas flow sensor, and a gas mass flow controller is applied to patent number CN 212513176U.

Currently, in the conventional gas flow rate detection, a flow meter of a throttle type, an area type, or a positive displacement type is generally used for the detection. Detection often requires the configuration of some auxiliary equipment, and thus the detection cost is high. In addition, in the measuring process, in a gas flow area, flow coefficients of the orifice plate, the venturi tube and the flow nozzle are quite unstable, so that difficulty is brought to measurement, the detection precision is difficult to improve, deviation easily occurs in the process of measuring the flow, and the measuring result is not in line with the actual situation.

To this end, we propose a laminar flow structure of a gas flow sensor, aiming at the above problems.

Disclosure of Invention

The utility model aims to provide a laminar flow structure of a gas flow sensor, which has the advantages of reduced deviation, stable measurement coefficient and high accuracy, and solves the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a gas flow sensor laminar flow structure, includes the gas flow sensor body, gas flow sensor body top is equipped with the base, be equipped with the flow mark in the middle of the base surface, the flow mark left side is equipped with spacing fixed block, spacing fixed block left side is equipped with the gas flow export, gas flow export top is equipped with the apron, apron left side top is through the bolt fastening there being capacitive element, capacitive element right side is connected with the connection pencil through the pencil, the connection pencil right side is connected with differential pressure sensor through the pencil, differential pressure sensor right side is connected with MCU through the pencil, the MCU top is connected with digital display screen through the pencil, digital display screen right side below is equipped with the sensor port, the sensor port below is equipped with gas flow import, the inside left side of gas flow import is equipped with the rectifier, the rectifier left side is equipped with laminar flow element.

Preferably, the gas flow sensor body is composed of a base and a cover plate, and the cover plate is fixed above the base through bolts.

Preferably, the two sides of the base are respectively provided with a gas flow outlet and a gas flow inlet, the gas flow outlet and the gas flow inlet are gas flow pipes, the gas flow pipes are positioned in the middle of the base, and the gas flow pipes are fixed in the middle of the rectifier and the laminar flow element through embedding.

Preferably, the rectifiers and the laminar flow element are fixed in the middle of the inside of the base and the cover plate through bolts, two rectifiers are arranged, and the two rectifiers are symmetrically fixed on the left side and the right side of the laminar flow element.

Preferably, a differential pressure sensor and an MCU are arranged in the cover plate, and the differential pressure sensor is connected with the capacitive element through a connecting wire harness.

Preferably, the MCU is respectively connected with a digital display screen, a rectifier, a laminar flow element and a differential pressure sensor through wire harnesses, and the rectifier is a gas rectifying device.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model provides a laminar flow structure of gas flow sensor, through the inside rectifier that is equipped with of gas flow sensor body, and the rectifier is gas rectifier device, be favorable to going on flowing into through the gas flow inlet with the gas flow of irregular flow become regular flow air current, or change rotatory air current into the air current of straight line flow, make it simultaneously when detecting, be favorable to making it further reduce the deviation of its measuring flow in the in-process that measures the flow, the stability of flow measurement coefficient has been ensured simultaneously, and at the laminar flow component, be favorable to making it carry out and make the flow form laminar flow through these runners to flowing through the rectifier, simultaneously carry out the laminar flow that produces to the laminar flow component through differential pressure sensor and measure, be favorable to improving the detection precision, simultaneously further improve the accuracy of in-process that measures the flow.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a laminar flow structure of a gas flow sensor according to the present utility model;

FIG. 2 is a schematic diagram of a laminar flow structure of a gas flow sensor according to the present utility model;

FIG. 3 is a schematic side view of a laminar flow structure of a gas flow sensor according to the present utility model;

fig. 4 is a schematic diagram of the internal structure of a laminar flow structure of a gas flow sensor according to the present utility model.

The reference numerals in the drawings indicate: 1. a gas flow sensor body; 2. a base; 3. a flow rate flag; 4. limiting fixed blocks; 5. a gas flow outlet; 6. a capacitive element; 7. a digital display screen; 8. a cover plate; 9. a sensor port; 10. connecting the wire harness; 11. a gas flow inlet; 12. a rectifier; 13. a laminar flow element; 14. a differential pressure sensor; 15. and (3) an MCU.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Example 1:

referring to fig. 1-4, a laminar flow structure of a gas flow sensor comprises a gas flow sensor body 1, wherein a base 2 is arranged above the gas flow sensor body 1, the gas flow sensor body 1 is composed of the base 2 and a cover plate 8, the cover plate 8 is fixed above the base 2 through bolts, the whole laminar flow structure of the gas flow sensor is formed, and the laminar flow structure of the gas flow sensor is simple in whole structure, easy to manufacture and convenient to install;

the flow mark 3 is arranged in the middle of the surface of the base 2, the gas flow outlet 5 and the gas flow inlet 11 are respectively arranged on two sides of the base 2, the gas flow outlet 5 and the gas flow inlet 11 are gas flow pipes, the gas flow pipes are positioned in the middle of the base 2 and are fixed between the rectifier 12 and the laminar flow element 13 in an embedded manner, so that the accuracy of the device in the process of rectifying and splitting the gas flowing into the gas flow pipes into laminar flows is improved, the accuracy of the flow is improved, and the deviation of the measured flow is reduced;

the left side of the flow mark 3 is provided with a limiting fixed block 4, the left side of the limiting fixed block 4 is provided with a gas flow outlet 5, a cover plate 8 is arranged above the gas flow outlet 5, a differential pressure sensor 14 and an MCU15 are arranged in the cover plate 8, the differential pressure sensor 14 is connected with a capacitance element 6 through a connecting wire harness 10, a rectifier 12 and a laminar flow element 13 are fixed in the middle of the inside of the base 2 and the cover plate 8 through bolts, the two rectifiers 12 are arranged, the two rectifiers 12 are symmetrically fixed on the left side and the right side of the laminar flow element 13, the improvement of the gas flow which is rectified and divided into laminar flows through the rectifier 12 and the laminar flow element 13 is facilitated, and the acquired data are displayed in real time through a digital display screen 7;

the capacitive element 6 is fixed on the left upper side of the cover plate 8 through a bolt, the connecting wire harness 10 is connected to the right side of the capacitive element 6 through a wire harness, the differential pressure sensor 14 is connected to the right side of the connecting wire harness 10 through a wire harness, the MCU15 is connected to the right side of the differential pressure sensor 14 through a wire harness, the digital display screen 7 is connected to the upper side of the MCU15 through a wire harness, the sensor port 9 is arranged below the right side of the digital display screen 7, the gas flow inlet 11 is arranged below the sensor port 9, the rectifier 12 is arranged on the left side of the gas flow inlet 11, the laminar flow element 13 is arranged on the left side of the rectifier 12, the MCU15 is respectively connected with the digital display screen 7, the rectifier 12, the laminar flow element 13 and the differential pressure sensor 14 through the wire harness, the rectifier 12 is a gas rectifying device, and gas flowing in and flowing out through the rectifier 12 are rectified, so that the detection precision of the gas flow is improved.

Working principle: when the laminar flow structure of the gas flow sensor is used, firstly, the capacitive element 6 passes through the whole required electric energy, the gas flow sensor body 1 is formed by fixing the base 2 and the cover plate 8 through bolts, the gas flow is connected to the gas flow inlet 11 arranged on the right side of the gas flow sensor body 1, the gas is rectified through the rectifier 12, the laminar flow is formed by the laminar flow element 13 after the gas is rectified, the detection and collection of the gas flow of the rectifier 12 and the laminar flow element 13 are carried out through the differential pressure sensor 14, the data collected by the differential pressure sensor 14 are received by the MCU15, the gas flow is displayed in real time through the digital display screen 7, the gas flow is controlled through the sensor port 9 arranged on the right side of the MCU15, and finally, the rectified and laminar gas flow is discharged through the gas flow outlet 5.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A laminar flow structure of a gas flow sensor, comprising a gas flow sensor body (1), characterized in that: the gas flow sensor comprises a gas flow sensor body (1), a base (2) is arranged above the gas flow sensor body, a flow mark (3) is arranged in the middle of the surface of the base (2), a limiting fixed block (4) is arranged on the left side of the flow mark (3), a gas flow outlet (5) is arranged on the left side of the limiting fixed block (4), a cover plate (8) is arranged above the gas flow outlet (5), a capacitor element (6) is fixed on the left side of the cover plate (8) through bolts, a connecting wire harness (10) is connected to the right side of the capacitor element (6) through a wire harness, a differential pressure sensor (14) is connected to the right side of the connecting wire harness (10) through a wire harness, an MCU (15) is connected to the right side of the differential pressure sensor through a wire harness, a digital display screen (7) is arranged above the MCU (15), a sensor port (9) is arranged below the right side of the digital display screen, a gas flow inlet (11) is arranged below the sensor port (9), a rectifier (12) is arranged on the left side inside the gas flow inlet (11), and a rectifier (12) is arranged on the left side of the inside of the gas flow inlet (11).

2. A laminar flow structure for a gas flow sensor according to claim 1, characterized in that: the gas flow sensor body (1) is composed of a base (2) and a cover plate (8), and the cover plate (8) is fixed above the base (2) through bolts.

3. A laminar flow structure for a gas flow sensor according to claim 2, characterized in that: the gas flow control device is characterized in that a gas flow outlet (5) and a gas flow inlet (11) are respectively arranged on two sides of the base (2), the gas flow outlet (5) and the gas flow inlet (11) are gas flow pipes, the gas flow pipes are located inside the middle of the base (2), and the gas flow pipes are fixed in the middle of the rectifier (12) and the laminar flow element (13) through embedding.

4. A laminar flow structure for a gas flow sensor according to claim 3, characterized in that: the two rectifiers (12) and the laminar flow element (13) are fixed in the middle of the inside of the base (2) and the cover plate (8) through bolts, the two rectifiers (12) are arranged, and the two rectifiers (12) are symmetrically fixed on the left side and the right side of the laminar flow element (13).

5. A laminar flow structure for a gas flow sensor according to claim 2, characterized in that: the cover plate (8) is internally provided with a differential pressure sensor (14) and an MCU (micro control unit) (15), and the differential pressure sensor (14) is connected with the capacitive element (6) through a connecting wire harness (10).

6. A laminar flow structure for a gas flow sensor according to claim 5, characterized in that: the MCU (15) is respectively connected with a digital display screen (7), a rectifier (12), a laminar flow element (13) and a differential pressure sensor (14) through wire harnesses, and the rectifier (12) is a gas rectifying device.