CN212058917U - A differential pressure electronic flow switch - Google Patents

Abstract

The utility model is suitable for a belong to fluid measurement technical field, especially relate to a differential pressure type electronic flow switch. The embodiment of the utility model provides a pair of differential pressure type electronic flow switch, simple structure, reasonable in design can carry out flow measurement to the fluid that awaits measuring fast, and its measuring result is accurate, and whole appearance is small and exquisite, and the commonality is strong, can measure the fluid of multiple difference.

Description

A differential pressure electronic flow switch

technical field

The utility model belongs to the technical field of fluid measurement, in particular to a differential pressure type electronic flow switch.

Background technique

The English name of the flowmeter is flowmeter, which is defined by the National Committee for the Approval of Scientific and Technological Terms as: an instrument indicating the measured flow and (or) the total amount of fluid in a selected time interval. Simply put, it is an instrument used to measure the flow of fluid in a pipe or open channel.

Flowmeters are further divided into differential pressure flowmeters, rotor flowmeters, throttle flowmeters, slit flowmeters, volumetric flowmeters, electromagnetic flowmeters, ultrasonic flowmeters, etc. Classification by medium: liquid flowmeter and gas flowmeter. Metrology is the eyes of industrial production. Flow measurement is one of the components of measurement science and technology, and it is closely related to the national economy, national defense construction, and scientific research. Doing this work well plays an important role in ensuring product quality, improving production efficiency, and promoting the development of science and technology, especially in the current era of energy crisis and increasing automation of industrial production, flowmeters play an important role in the national economy. status and role are more obvious.

The existing flowmeter has a complex structure and poor generality.

Utility model content

The purpose of the embodiments of the present utility model is to provide a differential pressure type electronic flow switch, which aims to solve the problems of complex structure and poor versatility of the existing flowmeter.

The embodiment of the present invention is realized in this way, a differential pressure type electronic flow switch, the differential pressure type electronic flow switch includes a measuring tube, a pressure sensor and a flow converter, and two drainage flows are arranged on the measuring tube along the radial direction. The pressure sensor is installed at the end of the drainage channel away from the measuring tube, the flow converter is electrically connected to the pressure sensor, the measuring tube is provided with a measuring orifice, the measuring orifice is arranged between the two drainage channels, and the middle is provided with a Pores.

Preferably, a display screen is connected to the flow converter for displaying various measured values.

Preferably, the drainage channel is composed of a first channel section and a second channel section, the first channel section is fixedly arranged on the outer diameter of the measuring tube and communicates with the measuring tube, and the second channel section is detachably connected to the first channel section. One end of the flow channel section away from the measuring tube, and the pressure sensor is installed at one end of the second flow channel section away from the first flow channel section.

Preferably, the first flow channel section and the second flow channel section are connected by screw threads.

Preferably, the outer diameters of the two ends of the measuring tube are provided with connecting threads, and the connecting threads are used to connect the pipeline where the fluid to be measured is located.

The differential pressure electronic flow switch provided by the embodiment of the present utility model has a simple structure and a reasonable design, can quickly measure the flow rate of the fluid to be measured, has accurate measurement results, and has a small overall shape and strong versatility, and can measure a variety of different of fluid.

Description of drawings

1 is a front view of a differential pressure electronic flow switch provided by an embodiment of the present utility model;

Fig. 2 is the sectional view at F-F place in Fig. 1;

FIG. 3 is a three-dimensional view of a differential pressure electronic flow switch according to an embodiment of the present invention.

In the drawings: 1. Measuring tube; 2. Measuring orifice plate; 3. Drainage channel; 4. Pressure sensor; 5. Flow converter; 6. Display screen.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

As shown in FIG. 1, it is a front view of a differential pressure type electronic flow switch provided by an embodiment of the present utility model. The differential pressure type electronic flow switch includes a measuring tube 1, a pressure sensor 4 and a flow converter 5. The measuring tube 1 is provided with two drainage channels 3 along the radial direction, the pressure sensor 4 is installed at one end of the drainage channel 3 away from the measuring tube 1, the flow converter 5 is electrically connected with the pressure sensor 4, and the measuring tube 1 is provided with a measuring hole Plate 2, the measuring orifice plate 2 is arranged between the two drainage channels 3, and a fine hole is arranged in the middle.

In an example of the present utility model, when measuring the flow rate, the measuring tube 1 is first connected in series in the flow channel where the fluid to be measured is located, the fluid flows through the measuring tube 1, and the fluid flows from one end of the measuring tube 1 to the other end of the measuring tube 1. During the process, it must pass through the pores set on the measuring orifice 2. Due to the existence of the pores, there will be a certain pressure difference between the fluids in the front and rear of the measuring tube 1, and the fluids on both sides of the measuring orifice 2 pass through the two fluids respectively. Each drainage channel 3 is in contact with two pressure sensors 4, and the pressure sensors 4 measure the pressure of the fluid in the front and rear parts of the measuring tube 1, and send it to the flow converter 5, and the flow converter 5 calculates the measured pressure value. , and finally convert the current flow value. The differential pressure electronic flow switch provided by the embodiment of the present utility model has a simple structure and a reasonable design, can quickly measure the flow rate of the fluid to be measured, has accurate measurement results, and has a small overall shape and strong versatility, and can measure a variety of different of fluid.

As shown in Figures 1, 2 and 3, as a preferred embodiment of the present invention, a display screen 6 is connected to the flow converter 5 for displaying various measured values.

In an example of the present invention, by setting the display screen 6, the user can quickly and intuitively know the current measured flow value.

As shown in Figures 1, 2 and 3, as a preferred embodiment of the present invention, the drainage channel 3 is composed of a first channel section and a second channel section, and the first channel section is fixedly arranged on the measuring tube 1 The second flow channel section is detachably connected to the end of the first flow channel section away from the measurement tube 1, and the pressure sensor 4 is installed at the end of the second flow channel section away from the first flow channel section.

As shown in Figures 1, 2 and 3, as a preferred embodiment of the present invention, the first flow channel section and the second flow channel section are connected by screws.

In an example of the present invention, the drainage channel 3 is composed of a first channel segment and a second channel segment, and the second channel segment is screwed to the end of the first channel segment away from the measuring tube 1, so whether it is in the When installing or disassembling, threaded connection is a very convenient connection method, which can improve the speed of installation and disassembly and ensure the connection strength.

As shown in Figures 1, 2 and 3, as a preferred embodiment of the present invention, the outer diameters of both ends of the measuring tube 1 are provided with connecting threads, and the connecting threads are used to connect the pipeline where the fluid to be measured is located.

In an example of the present invention, the outer diameters of both ends of the measuring tube 1 are provided with connecting threads. Threaded connection is a widely used detachable fixed connection, which has the advantages of simple structure, reliable connection, and convenient assembly and disassembly.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (5)

1. A differential pressure type electronic flow switch, characterized in that the differential pressure type electronic flow switch comprises a measuring tube (1), a pressure sensor (4) and a flow converter (5), and the upper edge of the measuring tube (1) Two drainage channels (3) are radially arranged, the pressure sensor (4) is installed at one end of the drainage channel (3) away from the measuring tube (1), and the flow converter (5) is electrically connected with the pressure sensor (4). The measuring tube (1) is provided with a measuring orifice plate (2), the measuring orifice plate (2) is arranged between the two drainage channels (3), and a fine hole is arranged in the middle. 2 . The differential pressure electronic flow switch according to claim 1 , wherein a display screen ( 6 ) is connected to the flow converter ( 5 ) for displaying various measured values. 3 . 3 . The differential pressure electronic flow switch according to claim 1 , wherein the drainage channel ( 3 ) is composed of a first flow channel section and a second flow channel section, and the first flow channel section is fixedly arranged on the measuring tube. 4 . (1) and communicated with the measuring tube (1), the second flow channel section is detachably connected to the end of the first flow channel section away from the measuring tube (1), and the pressure sensor (4) is installed in the second flow channel section away from the end of the first runner segment. 4 . The differential pressure electronic flow switch according to claim 3 , wherein the first flow channel section and the second flow channel section are connected by screws. 5 . 5. The differential pressure type electronic flow switch according to any one of claims 1 to 4, wherein the outer diameter of both ends of the measuring tube (1) is provided with connecting threads, and the connecting threads are used to connect the fluid to be measured. pipeline.

Images