阅读说明：本技术 喷嘴流量表稳流稳压信号采集结构 (Flow stabilizing and pressure stabilizing signal acquisition structure of nozzle flow meter ) 是由 彭源 邓红波 于 2020-08-11 设计创作，主要内容包括：本发明涉及流量表领域,尤其涉及一种结构简单、方便流体稳流稳压、提高流量数据准确性的喷嘴流量表稳流稳压信号采集结构。进口管和出口管分别从管道安装通孔的两端接入；在第一节流环上设置有穿过第二节流环的喷嘴；在第一节流环和第二节流环均设置有一个信号采集口,两个信号采集口与设置在喷嘴主体上的数据接收处理装置连接；在进口管的内壁上设置有提高流体稳定性的稳流机构。本发明的喷嘴流量表稳流稳压信号采集结构,流体到达稳流板的时候,在稳流板的作用下旋转流动,对进口管的管壁的压力均匀稳定,在第一节流环和第二节流环的作用下,使得信号采集口的流速、压力稳定,具有结构简单、方便流体稳流的特点,提高了流量数据准确性。(The invention relates to the field of flow meters, in particular to a flow stabilizing and voltage stabilizing signal acquisition structure of a nozzle flow meter, which has a simple structure, is convenient for stabilizing the flow of fluid and improving the accuracy of flow data. The inlet pipe and the outlet pipe are respectively connected from two ends of the pipeline installation through hole; a nozzle penetrating through the second throttle ring is arranged on the first throttle ring; the first throttling ring and the second throttling ring are both provided with a signal acquisition port, and the two signal acquisition ports are connected with a data receiving and processing device arranged on the nozzle main body; and a flow stabilizing mechanism for improving the stability of the fluid is arranged on the inner wall of the inlet pipe. According to the flow stabilizing and pressure stabilizing signal acquisition structure of the nozzle flow meter, when fluid reaches the flow stabilizing plate, the fluid rotates and flows under the action of the flow stabilizing plate, the pressure on the wall of the inlet pipe is uniform and stable, the flow speed and the pressure of the signal acquisition port are stable under the action of the first throttling ring and the second throttling ring, the flow stabilizing and pressure stabilizing signal acquisition structure has the characteristics of simple structure and convenience in fluid flow stabilization, and the accuracy of flow data is improved.)

1. The structure for collecting the flow-stabilizing and pressure-stabilizing signals of the nozzle flowmeter is characterized in that: the nozzle comprises a nozzle body (1), an inlet pipe (3) and an outlet pipe (4), wherein a pipeline installation through hole (2) is formed in the nozzle body (1), and the inlet pipe (3) and the outlet pipe (4) are respectively connected from two ends of the pipeline installation through hole (2); a nozzle mechanism matched with the butt joint position of the inlet pipe (3) and the outlet pipe (4) is matched in the pipeline mounting through hole (2); the nozzle mechanism comprises a first throttling ring (13) arranged at the butt joint end of the inlet pipe (3) and a second throttling ring (14) arranged at the butt joint end of the outlet pipe (4), and a nozzle (15) penetrating through the second throttling ring (14) is arranged on the first throttling ring (13); the first throttling ring (13) and the second throttling ring (14) are respectively provided with a signal acquisition port (16), and the two signal acquisition ports (16) are connected with a data receiving and processing device arranged on the nozzle main body (1); and a flow stabilizing mechanism for improving the stability of the fluid is arranged on the inner wall of the inlet pipe (3).

2. The flow-stabilizing and pressure-stabilizing signal acquisition structure of the nozzle flow meter according to claim 1, characterized in that: the flow stabilizing mechanisms are three flow stabilizing plates (18), and the three flow stabilizing plates (18) are uniformly arranged along the circumferential direction of the inner wall of the inlet pipe (3).

3. The flow-stabilizing and pressure-stabilizing signal acquisition structure of the nozzle flow meter according to claim 2, characterized in that: the plane where the flow stabilizing plates (18) are located is perpendicular to the inner wall of the inlet pipe (3), and an included angle formed by the plane where the flow stabilizing plates (18) are located and the cross section of the inlet pipe (3) is an acute angle alpha, and alpha is more than or equal to 15 degrees and less than or equal to 45 degrees.

4. The flow-stabilizing and pressure-stabilizing signal acquisition structure of the nozzle flow meter according to claim 3, characterized in that: the included angle between the plane where the flow stabilizing plate (18) is located and the cross section of the inlet pipe (3) is an acute angle alpha, and alpha is 25 degrees.

5. The flow-stabilizing and pressure-stabilizing signal acquisition structure of the nozzle flow meter according to claim 4, characterized in that: the flow stabilizing plate (18) is in a fan shape with a long root and a short top.

6. The flow-stabilizing and pressure-stabilizing signal acquisition structure of the nozzle flow meter according to claim 5, characterized in that: the nozzle is characterized by also comprising a protective shell (11), wherein the protective shell (1) is in clamping fit with the nozzle main body (1); the data receiving and processing device is arranged in the protective shell (11) and matched with the signal acquisition port (16), the data receiving and processing device is matched with the external data interface (10), and an opening (12) which is convenient for the external data interface (10) to extend out is formed in the protective shell (1).

7. The flow-stabilizing and pressure-stabilizing signal acquisition structure of the nozzle flow meter according to claim 6, characterized in that: outer threads (5) are arranged on the inlet pipe (3) and the outlet pipe (4), and inner threads (6) matched with the outer threads (5) are arranged in the pipeline installation through holes (2).

8. The flow-stabilizing and pressure-stabilizing signal acquisition structure of the nozzle flow meter according to claim 7, characterized in that: and a rubber sealing ring is matched at the signal acquisition port (16).

Technical Field

The invention relates to the field of flow meters, in particular to a flow stabilizing and voltage stabilizing signal acquisition structure of a nozzle flow meter, which has a simple structure, is convenient for stabilizing the flow of fluid and improving the accuracy of flow data.

Background

Flow meters, and in particular gas flow meters, are commonly used in everyday life, for example, natural gas meters, which are necessary to calculate the amount of natural gas used by a user. The gas meter commonly used at present measures by detecting the actual flow of gas. In the existing flowmeter, fluid directly passes through a pipeline, and when the flowmeter is detected, the fluid is disturbed due to the existence of a detection mechanism, so that the pressure of the fluid on the pipe wall is unstable, and the data is inaccurate. In addition, the speed of the fluid directly passing through the pipeline is high, and the detection mechanism is greatly impacted, so that the flow velocity and the pressure are unstable.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a flow stabilizing and voltage stabilizing signal acquisition structure of a nozzle flow meter, which has a simple structure, is convenient for stabilizing the flow of fluid and improving the accuracy of flow data.

The technical scheme adopted by the invention is as follows: the flow-stabilizing and pressure-stabilizing signal acquisition structure of the nozzle flow meter comprises a nozzle main body, an inlet pipe and an outlet pipe, wherein a pipeline installation through hole is formed in the nozzle main body, and the inlet pipe and the outlet pipe are respectively connected from two ends of the pipeline installation through hole; a nozzle mechanism matched with the butt joint position of the inlet pipe and the outlet pipe is matched in the pipeline mounting through hole; the nozzle mechanism comprises a first throttling ring arranged at the butt joint end of the inlet pipe and a second throttling ring arranged at the butt joint end of the outlet pipe, and a nozzle penetrating through the second throttling ring is arranged on the first throttling ring; the first throttling ring and the second throttling ring are both provided with a signal acquisition port, and the two signal acquisition ports are connected with a data receiving and processing device arranged on the nozzle main body; and a flow stabilizing mechanism for improving the stability of the fluid is arranged on the inner wall of the inlet pipe.

In order to better realize the invention, the three flow stabilizing mechanisms are uniformly arranged along the circumferential direction of the inner wall of the inlet pipe.

In order to better realize the invention, the plane of the flow stabilizing plate is vertical to the inner wall of the inlet pipe, and the included angle between the plane of the flow stabilizing plate and the cross section of the inlet pipe is an acute angle alpha which is more than or equal to 15 degrees and less than or equal to 45 degrees.

In order to better realize the invention, the included angle between the plane of the flow stabilizing plate and the cross section of the inlet pipe is an acute angle alpha, and alpha is 25 degrees.

In order to better realize the invention, the flow stabilizing plate is in a fan shape with a long root and a short top.

In order to better realize the invention, the invention also comprises a protective shell, and the protective shell is clamped and matched with the nozzle main body; the data receiving and processing device is arranged in the protective shell and matched with the signal acquisition port, the data receiving and processing device is matched with an external data interface, and an opening for the external data interface to extend out conveniently is formed in the protective shell.

In order to better realize the invention, the inlet pipe and the outlet pipe are both provided with outer threads, and the pipeline mounting through hole is internally provided with inner threads matched with the outer threads.

In order to better realize the invention, a rubber sealing ring is matched at the signal acquisition opening.

The invention has the beneficial effects that: according to the flow stabilizing and pressure stabilizing signal acquisition structure of the nozzle flow meter, through the matching of the nozzle main body, the inlet pipe, the outlet pipe, the installation through hole, the nozzle mechanism, the first throttle ring, the second throttle ring, the signal acquisition port, the data receiving and processing device, the flow stabilizing mechanism and the like, when gas or liquid reaches the flow stabilizing plate, the gas or liquid flows in a rotating mode under the action of the flow stabilizing plate, the pressure on the pipe wall of the inlet pipe is uniform and stable, when the gas or liquid reaches the nozzle mechanism consisting of the first throttle ring and the second throttle ring, the flow speed and the pressure of the signal acquisition port are stable under the action of the first throttle ring and the second throttle ring, the flow stabilizing and pressure stabilizing signal acquisition structure has the advantages of being simple in structure and convenient for fluid flow.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of an explosion structure of a flow stabilizing and pressure stabilizing signal acquisition structure of a nozzle flow meter according to the present invention;

FIG. 2 is a schematic structural view of a flow stabilizing and pressure stabilizing signal acquisition structure of a nozzle flow meter according to the present invention;

FIG. 3 is a schematic view of a configuration of inlet and outlet tube combinations of a flow stabilizing and voltage stabilizing signal acquisition configuration of a nozzle flow meter in accordance with the present invention;

in the figure, 1-nozzle body, 2-pipeline installation through hole, 3-inlet pipe, 4-outlet pipe, 5-external screw thread, 6-internal screw thread, 10-external data interface, 11-protective shell, 12-opening, 13-first throttling ring, 14-second throttling ring, 15-nozzle, 16-signal acquisition port, 18-flow stabilizer and 21-rubber sealing ring.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.