CN111811591A - Nozzle flow meter steady flow signal acquisition structure - Google Patents

Abstract

The invention relates to the field of flow meters, in particular to a nozzle flow meter steady-flow and constant-voltage signal acquisition structure, which is simple in structure, facilitates steady flow and constant pressure of fluid, and improves the accuracy of flow data. The inlet pipe and the outlet pipe are respectively connected from both ends of the pipe installation through hole; the first throttle ring is provided with a nozzle passing through the second throttle ring; both the first throttle ring and the second throttle ring are provided There is a signal collection port, and the two signal collection ports are connected with the data receiving and processing device arranged on the main body of the nozzle; the inner wall of the inlet pipe is provided with a steady flow mechanism for improving the stability of the fluid. In the nozzle flow meter steady flow signal collection structure of the present invention, when the fluid reaches the steady flow plate, it rotates and flows under the action of the steady flow plate, and the pressure on the pipe wall of the inlet pipe is uniform and stable. Under the action of the second throttling ring, the flow rate and pressure of the signal collection port are stabilized, the structure is simple, the fluid flow is convenient, and the accuracy of the flow data is improved.

Description

Nozzle flow meter steady flow signal acquisition structure

technical field

The invention relates to the field of flow meters, in particular to a nozzle flow meter steady-flow and constant-voltage signal acquisition structure, which is simple in structure, convenient for fluid constant flow and constant pressure, and improves the accuracy of flow data.

Background technique

Flow meters, especially gas flow meters, are often used in daily life. For example, natural gas meters must be used in order to calculate the amount of natural gas used by users. The gas meter commonly used at present is measured by detecting the actual flow of gas. In the existing flow meter, the fluid directly passes through the pipeline. When the flow meter is detected, the existence of the detection mechanism will disturb the fluid, resulting in unstable pressure of the fluid on the pipe wall, resulting in inaccurate data. In addition, the speed of the fluid directly passing through the pipeline is relatively fast, which has a greater impact on the detection mechanism, resulting in unstable flow rate and pressure.

SUMMARY OF THE INVENTION

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

The technical scheme adopted in the present invention is: a nozzle flow meter steady flow and voltage stabilization signal collection structure, including a nozzle main body, an inlet pipe and an outlet pipe, a pipe installation through hole is opened in the nozzle main body, and the inlet pipe and the outlet pipe are respectively Access from both ends of the pipe installation through hole; the pipe installation through hole is fitted with a nozzle mechanism matched with the butting position of the inlet pipe and the outlet pipe; the nozzle mechanism includes a first section arranged at the butt end of the inlet pipe A flow ring and a second throttling ring arranged at the butt end of the outlet pipe, the first throttling ring is provided with a nozzle passing through the second throttling ring; the first throttling ring and the second throttling ring are provided Each of the flow rings is provided with a signal collection port, and the two signal collection ports are connected with the data receiving and processing device arranged on the main body of the nozzle; the inner wall of the inlet pipe is provided with a steady flow mechanism to improve fluid stability .

In order to better realize the present invention, the flow-stabilizing mechanism is a flow-stabilizing plate, and the flow-stabilizing plates are three and are evenly arranged along the circumference of the inner wall of the inlet pipe.

In order to better realize the present invention, the plane where the steady flow plate is located is perpendicular to the inner wall of the inlet pipe, and the included angle between the plane where the steady flow plate is located and the cross section of the inlet pipe is an acute angle α, which satisfies 15°. ≤α≤45°.

In order to better realize the present invention, the included angle between the plane where the steady flow plate is located and the cross section of the inlet pipe is an acute angle α, which satisfies α=25°.

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

In order to better realize the present invention, it also includes a protective casing, the protective casing is snap-fitted with the nozzle body; the data receiving and processing device is placed in the protective casing, and is connected with the signal The collection port is matched, the data receiving and processing device is matched with an external data interface, and an opening is provided on the protective shell to facilitate the extension of the external data interface.

In order to better realize the present invention, the inlet pipe and the outlet pipe are provided with external threads, and the pipe installation through holes are provided with internal threads matched with the external threads.

In order to better realize the present invention, a rubber sealing ring is fitted at the signal collection port.

The beneficial effects of the present invention are reflected in: the nozzle flow meter steady flow and voltage stabilization signal collection structure of the present invention, through the nozzle body, the inlet pipe, the outlet pipe, the installation through hole, the nozzle mechanism, the first throttle ring, the second throttle ring With the cooperation of signal acquisition port, data receiving and processing device and steady flow mechanism, when the gas or liquid reaches the steady flow plate, it rotates and flows under the action of the steady flow plate, and the pressure on the wall of the inlet pipe is uniform and stable, and reaches the first When the nozzle mechanism is composed of a throttling ring and a second throttling ring, under the action of the first throttling ring and the second throttling ring, the flow rate and pressure of the signal acquisition port are stable, and the structure is simple and convenient for fluid flow stabilization. features, which improves the accuracy of traffic data.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that are required to be used in the description of the specific embodiments or the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. In the drawings, each element or section is not necessarily drawn to actual scale.

Fig. 1 is a kind of explosion structure schematic diagram of the nozzle flow meter steady flow steady voltage signal acquisition structure of the present invention;

Fig. 2 is a kind of structural schematic diagram of the nozzle flow meter steady flow steady voltage signal acquisition structure of the present invention;

Fig. 3 is a kind of structural schematic diagram of the cooperation of the inlet pipe and the outlet pipe of the nozzle flow meter steady flow and voltage stabilization signal acquisition structure of the present invention;

In the drawings, 1-nozzle body, 2-pipe installation through hole, 3-inlet pipe, 4-outlet pipe, 5-external thread, 6-inner thread, 10-external data interface, 11-protective shell, 12-opening, 13-first throttling ring, 14-second throttling ring, 15-nozzle, 16-signal collection port, 18-stabilizing plate, 21-rubber sealing ring.

Detailed ways

Embodiments of the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the usual meanings understood by those skilled in the art to which the present invention belongs.

Example 1:

As shown in FIGS. 1 to 3 , the nozzle flow meter steady flow and voltage stabilization signal acquisition structure of the present invention includes a nozzle body 1 , an inlet pipe 3 and an outlet pipe 4 , and a pipe installation through hole 2 is opened in the nozzle body 1 , The inlet pipe 3 and the outlet pipe 4 are respectively connected from both ends of the pipe installation through hole 2; a nozzle mechanism matched with the butt position of the inlet pipe 3 and the outlet pipe 4 is fitted in the pipe installation through hole 2; The nozzle mechanism includes a first throttle ring 13 arranged at the butt end of the inlet pipe 3 and a second throttle ring 14 arranged at the butt end of the outlet pipe 4. The nozzles 15 of the two throttle rings 14; the first throttle ring 13 and the second throttle ring 14 are both provided with a signal collection port 16, and the two signal collection ports 16 are connected to the nozzle body 1 The data receiving and processing device on the upper part is connected; the inner wall of the inlet pipe 3 is provided with a steady flow mechanism to improve the stability of the fluid. The nozzle flow meter of the present invention has a constant flow and constant voltage signal acquisition structure, through the nozzle body 1, the inlet pipe 3, the outlet pipe 4, the installation through hole 2, the nozzle mechanism, the first throttle ring 13, the second throttle ring 14, the signal With the cooperation of the collection port 16, the data receiving and processing device and the steady flow mechanism, when the gas or liquid (fluid) reaches the steady flow plate, it rotates and flows under the action of the steady flow plate, and the pressure on the wall of the inlet pipe is uniform and stable. When reaching the nozzle mechanism composed of the first throttle ring 13 and the second throttle ring 14, under the action of the first throttle ring 13 and the second throttle ring 14, the flow rate and pressure of the signal collection port 16 are stabilized, and the The features of simple structure and convenient steady flow of fluid improve the accuracy of flow data.

Example 2:

On the basis of the above-mentioned embodiment, in order to further implement the present invention better, the flow-stabilizing mechanism is the flow-stabilizing plate 18 , and the flow-stabilizing plate 18 is three, which are uniform along the circumference of the inner wall of the inlet pipe 3 . layout.

Example 2:

On the basis of the above embodiment, in order to further implement the present invention better, the plane where the flow stabilizer 18 is located is perpendicular to the inner wall of the inlet pipe 3 , and the plane where the flow stabilizer 18 is located is perpendicular to the inlet pipe 3 The included angle of the cross section is an acute angle α, which satisfies 15°≤α≤45°. After this design, when the gas or liquid reaches the steady flow plate 18, it rotates counterclockwise or clockwise along the guide of the steady flow plate 18, and the pressure on the wall of the inlet pipe 3 is uniform. Preferably, the included angle between the plane where the steady flow plate 18 is located and the cross section of the inlet pipe 3 is an acute angle α, which satisfies α=25°. Further, the included angle between the plane where the steady flow plate 18 is located and the cross section of the inlet pipe 3 is an acute angle α, which satisfies α=30°.

Preferably, the steady flow plate 18 is in the shape of a fan with a long root and a short top. After this design, while facilitating the stable flow of gas or liquid, the steady flow plate 18 itself can reduce vibration and have better mechanical stability. It can easily detect accurate data.

Example 3:

On the basis of the above embodiment, in order to further implement the present invention better, a protective casing 11 is also included, and the protective casing 1 is snap-fitted with the nozzle body 1; the data receiving and processing device It is placed in the protective casing 11 and cooperates with the signal acquisition port 16. The data receiving and processing device is equipped with an external data interface 10. The protective casing 1 is provided with an opening that facilitates the extension of the external data interface 10. 12. The provision of the protective casing 1 can better protect the electronic devices of the data receiving and processing apparatus. Preferably, the protective casing 1 is generally made of corrosion-resistant materials, such as POM materials.

Example 4:

On the basis of the above embodiment, in order to further implement the present invention better, the inlet pipe 3 and the outlet pipe 4 are provided with external threads 5, and the pipe installation through hole 2 is provided with The external thread 5 is matched with the internal thread 6. Through the cooperation of the outer thread 5 and the inner thread 6, the inlet pipe 3 and the outlet pipe 4 can be conveniently and stably installed, and the connection is kept stable, and accurate data can be easily detected.

Example 5:

On the basis of the above embodiment, in order to further implement the present invention better, a rubber sealing ring is fitted at the signal collecting port 16, which has good sealing performance and can easily detect accurate data.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. The scope of the invention should be included in the scope of the claims and description of the present invention.

Claims (8)

1. Nozzle flow meter steady flow and voltage stabilization signal acquisition structure, characterized in that: it includes a nozzle body (1), an inlet pipe (3) and an outlet pipe (4), and a pipe installation through hole is opened in the nozzle body (1) (2), the inlet pipe (3) and the outlet pipe (4) are respectively connected from both ends of the pipe installation through hole (2); the pipe installation through hole (2) is matched with the inlet pipe (3) a nozzle mechanism matched with the butting position of the outlet pipe (4); the nozzle mechanism comprises a first throttle ring (13) arranged at the butting end of the inlet pipe (3) and a first throttle ring (13) arranged at the butting end of the outlet pipe (4) Two throttling rings (14), the first throttling ring (13) is provided with a nozzle (15) passing through the second throttling ring (14); the first throttling ring (13) ) and the second throttle ring (14) are both provided with a signal acquisition port (16), and the two signal acquisition ports (16) are connected with the data receiving and processing device arranged on the nozzle body (1); The inner wall of the inlet pipe (3) is provided with a steady flow mechanism for improving the stability of the fluid. 2. The flow-stabilizing and voltage-stabilizing signal collection structure of a nozzle flow meter according to claim 1, characterized in that: said current-stabilizing mechanism is a current-stabilizing plate (18), and said current-stabilizing plate (18) is three , and are evenly arranged along the circumference of the inner wall of the inlet pipe (3). 3. The nozzle flow meter steady-flow voltage-stabilizing signal acquisition structure according to claim 2, characterized in that: the plane where the steady-flow plate (18) is located is perpendicular to the inner wall of the inlet pipe (3), and the The included angle between the plane where the stabilizer plate (18) is located and the cross section of the inlet pipe (3) is an acute angle α, which satisfies 15°≤α≤45°. 4. The nozzle flow meter steady flow voltage stabilization signal acquisition structure according to claim 3 is characterized in that: the included angle between the plane where the steady flow plate (18) is located and the cross section of the inlet pipe (3) is an acute angle α, satisfies α=25°. 5 . The structure for collecting steady-flow and steady-state signals of a nozzle flow meter according to claim 4 , wherein the steady-flow plate ( 18 ) is in the shape of a fan with a long root and a short top. 6 . 6. The structure for collecting steady-flow and voltage-stabilizing signals of a nozzle flow meter according to claim 5, characterized in that: further comprising a protective casing (11), the protective casing (1) and the nozzle body ( 1) snap-fit; the data receiving and processing device is placed in the protective casing (11) and cooperates with the signal acquisition port (16), and the data receiving and processing device is matched with an external data interface (10) , an opening (12) for facilitating the extension of the external data interface (10) is provided on the protective casing (1). 7. The nozzle flow meter steady-flow voltage-stabilizing signal acquisition structure according to claim 6, characterized in that: the inlet pipe (3) and the outlet pipe (4) are both provided with external threads (5), An inner thread (6) matched with the outer thread (5) is arranged in the pipe installation through hole (2). 8 . The signal collection structure for steady flow and voltage stabilization of a nozzle flow meter according to claim 7 , wherein a rubber sealing ring is fitted at the signal collection port ( 16 ). 9 .

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