CN216718482U

CN216718482U - Pipeline wind speed transmitter based on micro differential pressure principle

Info

Publication number: CN216718482U
Application number: CN202220305127.4U
Authority: CN
Inventors: 郭大江
Original assignee: Shanghai Sonbest Industry Co ltd
Current assignee: Shanghai Sonbest Industry Co ltd
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-06-10
Anticipated expiration: 2032-02-15

Abstract

The utility model discloses a pipeline wind speed transmitter based on a micro-differential pressure principle, which relates to the technical field of pipeline wind speed calculation and comprises a transmitter body, wherein the transmitter body comprises an explosion-proof shell, a pressure pipe, a wind inlet and outlet detection port, a wind vane and a flange type mounting disc, and the upper end of the explosion-proof shell is provided with an explosion-proof shell cover; the device is matched with the air pipe through the air inlet and outlet detection port, and the air speed is calculated by measuring the pressure difference between the inlet and the outlet in the air pipe. The measurement is more accurate and stable, and the error is small; the air inlet and outlet detection ports are of a symmetrical structure, the pressure difference value is basically 0 in the absence of air, and the air outlet value can be obtained through the difference value of the front air pressure and the back air pressure and the sectional area of the pipeline; wind in the pipeline can blow business turn over wind detection mouth department, because inside trachea is thinner and there is the air column, even oil smoke dust class wind blows, also can be because business turn over wind detection mouth resistance and can't directly enter into the pressure port to effective extension equipment life.

Description

Pipeline wind speed transmitter based on micro differential pressure principle

Technical Field

The utility model relates to the technical field of pipeline wind speed calculation, in particular to a pipeline wind speed transmitter based on a micro-differential pressure principle.

Background

The pipeline wind speed transmitter based on the micro-differential pressure principle is a transmitter used for detecting the speed or the total amount of gas flowing in a pipeline, and is generally expressed by wind speed or wind volume.

The pipeline wind speed transmitter based on the micro-differential pressure principle is mainly used for flue gas treatment of a power plant, clean room management, breeding environment, a wind speed greenhouse, pipeline heat measurement, pipeline wind speed measurement and the like, and has important guiding significance. However, the pipeline wind speed transmitter on the market is usually in a three-cup type or a hot-film type, and the three-cup type has larger volume, cannot be used for smaller pipelines and has smaller applicable places; the hot diaphragm type measures the wind speed according to the relation between the heat loss and the gas flow speed, and most of measuring chips are of ultrathin ceramic attachment design, so that the measuring chips are easy to break or damage and have higher cost.

Therefore, there is a need to provide a pipeline wind speed transmitter based on micro differential pressure principle to solve the above technical and foreign factor problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pipeline wind speed transmitter based on a micro differential pressure principle, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a pipeline wind speed transmitter based on a micro differential pressure principle comprises a transmitter body, wherein the transmitter body comprises an explosion-proof shell, a pressure pipe, a wind inlet and outlet detection port, a wind vane and a flange type mounting disc, an explosion-proof shell cover is arranged at the upper end of the explosion-proof shell, pressure pipe threads are arranged at the upper end of the pressure pipe, and the upper end of the pressure pipe is in threaded connection with the lower end of the explosion-proof shell; the air inlet and outlet detection port is arranged at the bottom of the pressure pipe, an air inlet and outlet inlet is formed in the front surface of the air inlet and outlet detection port B, and an air inlet and outlet pipe connecting port is formed in the upper end of the air inlet and outlet detection port B; the anti-explosion shell is internally provided with a micro-differential pressure measurement circuit board and a wiring terminal, the flange type mounting disc is installed on the outer side wall of the pressure pipe, and the wind vane is arranged at the bottom of the wind inlet and outlet detection port.

As a further improvement of the above scheme, a hole for embedding the pressure pipe is arranged in the middle of the flange type mounting disc, and the flange type mounting disc is mounted on the pressure pipe and is screwed down by screws on the flange type mounting disc to be fixed when in use.

As a further improvement of the scheme, the flange type mounting plate is provided with three mounting hole positions for mounting on the air pipe.

As a further improvement of the scheme, the air inlet and outlet detection port is embedded in the pressure pipe.

As a further improvement of the scheme, the measurement range of the wind speed of the pipeline of the transmitter body is 0-60 m/s.

As a further improvement of the scheme, the length of the transmitter body is 267 mm.

As a further improvement of the scheme, the diameter of the main body of the transmitter body is 70 mm.

As a further improvement of the scheme, the diameter of the air inlet and outlet detection port at the bottom of the transmitter is 20 mm.

As a further improvement of the scheme, the length of the pressure pipe is 170 mm.

As a further improvement of the scheme, the maximum length of the explosion-proof shell is 120 mm.

As a further improvement of the scheme, the diameter of the flange type mounting disc is 70 mm.

As a further improvement of the scheme, the air inlet and outlet detection port is similar to a pitot tube structure but is smaller.

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

the utility model provides a pipeline wind speed transmitter based on a micro-differential pressure principle. The measurement is more accurate and stable, and the error is small; the air inlet and outlet detection port is of a symmetrical structure. The pressure difference value is basically 0 in the absence of wind, and the air outlet value can be obtained through the difference value of the front wind pressure and the back wind pressure and the sectional area of the pipeline; wind in the pipeline can blow business turn over wind detection mouth department, because inside trachea is thinner and there is the air column, even oil smoke dust class wind blows, also can be because business turn over wind detection mouth resistance and can't directly enter into the pressure port to effective extension equipment life.

Drawings

FIG. 1 is a schematic view of the overall structure of a pipeline wind speed transmitter according to the micro-differential pressure principle provided by the utility model;

FIG. 2 is a schematic view of the pressure tube and explosion proof housing of FIG. 1;

FIG. 3 is a top view of the flange plate of FIG. 1;

in fig. 4, a, b, c are a side view, a cross-sectional view and a schematic view of the air inlet/outlet detection port and the vane of the present invention, respectively.

In the figure: 1. an explosion proof housing cover; 2. an explosion-proof housing; 3. explosion-proof shell threads; 4. a pressure pipe; 5. an air inlet and outlet pipe connector; 6. pressure pipe threads; 7. a hole for inserting the pressure pipe; 8. screw fixing holes; 9. the screw fixes the hole for the air duct; 10. an air inlet and outlet; 11. a wind vane; A. a flange-type mounting plate; B. business turn over wind detection mouth.

Detailed Description

The technical solution of the present patent will be further described in detail with reference to the following embodiments.

Examples

Referring to fig. 1-4, a pipeline wind speed transmitter based on the principle of micro differential pressure comprises a transmitter body, wherein the transmitter body comprises an explosion-proof shell 2, a pressure pipe 4, a wind inlet and outlet detection port B, a wind vane 11 and a flange type mounting disc A, the upper end of the explosion-proof shell 2 is provided with an explosion-proof shell 2 cover 1, the upper end of the pressure pipe 4 is provided with a pressure pipe thread 6, and the upper end of the pressure pipe 4 is in threaded connection with the lower end of the explosion-proof shell 2; air inlet and outlet detection port B is arranged at the bottom of pressure pipe 4, air inlet and outlet inlet 10 is arranged on the front surface of air inlet and outlet detection port B, air inlet and outlet pipe connector 5 is arranged at the upper end of air inlet and outlet detection port B, micro-differential pressure measurement circuit board and wiring terminal are arranged inside explosion-proof shell 2, flange type mounting disc A is mounted on the outer side wall of pressure pipe 4, and wind vane 11 is arranged at the bottom of air inlet and outlet detection port B.

The flange type mounting disc A is provided with a hole 7 for embedding a pressure pipe in the middle and a screw fixing hole 8 on the side surface, and when the flange type mounting disc A is used, the flange type mounting disc A is mounted on the pressure pipe 4 and is screwed tightly to fix the flange type mounting disc A.

The periphery of the flange type mounting disc A is provided with three holes 9 for fixing the air pipe through screws, and the holes are used for mounting the flange type mounting disc A on the air pipe.

The air inlet and outlet detection port B is embedded in the pressure pipe 4.

The measuring range of the wind speed of the pipeline of the transmitter body is 0-60m/s, the starting wind speed is 0.05m/s, the power supply bus supplies power for 12-24V, the power consumption is less than or equal to 3W (@12V DC, 25 ℃), the working environment of the probe is-40-120 ℃ and 0-95% RH, and the working environment of the host is-40-85 ℃ and 0-95% RH.

The length of the transmitter body is 267 mm.

The main body diameter of transmitter body 70 mm.

The diameter of the air inlet and outlet detection port B at the bottom of the transmitter is 20 mm.

The pressure tube 4 has a length of 170 mm.

The maximum length of the explosion-proof housing 2 is 120 mm.

The diameter of the flange type mounting disc A is 70 mm.

The air inlet and outlet detection port B is similar to a pitot tube structure but is smaller.

Specifically, work as when explosion-proof housing cover 1, explosion-proof housing 2, pressure pipe 4, flange formula mounting disc A, business turn over wind detection port B need install, with pressure pipe 4 from last down imbed in explosion-proof housing 2 inside, install flange formula mounting disc A on the tuber pipe through screwing up the screw with it, the lower extreme business turn over wind detection port B of its pressure pipe 4 is located inside the tuber pipe, the explosion-proof housing 2 of its upper end is located the outside of tuber pipe, during the use, wind in the tuber pipe can blow business turn over wind detection port B department, detect port B and trachea through business turn over wind and cooperate, it calculates the wind speed to exit through measuring the intraductal pressure differential of tuber pipe.

The working principle of the utility model is as follows: the utility model provides a pipeline wind speed transmitter based on a micro-differential pressure principle. The measurement is more accurate and stable, and the error is small; the air inlet and outlet detection port B is of a symmetrical structure. The pressure difference value is basically 0 in the absence of wind, and the air outlet value can be obtained through the difference value of the front wind pressure and the back wind pressure and the sectional area of the pipeline; wind in the pipeline can blow business turn over wind detection mouth B department, because inside trachea is thinner and there is the air column, even oil smoke dust class wind blows, also can be because business turn over wind detection mouth B resistance and can't directly enter into the pressure port to effective extension equipment life.

Claims

1. The pipeline wind speed transmitter based on the micro differential pressure principle comprises a transmitter body and is characterized in that the transmitter body comprises an explosion-proof shell (2), a pressure pipe (4), a wind inlet and outlet detection port (B), a wind vane (11) and a flange type mounting disc (A), wherein the upper end of the explosion-proof shell (2) is provided with an explosion-proof shell (2) cover (1), the upper end of the pressure pipe (4) is provided with a pressure pipe thread (6), and the upper end of the pressure pipe (4) is in threaded connection with the lower end of the explosion-proof shell (2); business turn over wind detects mouth (B) and sets up in pressure pipe (4) bottom, be equipped with business turn over wind entry (10) on business turn over wind detects the front of mouth (B), be equipped with business turn over trachea connector (5) on its upper end, explosion-proof housing (2) are inside to be equipped with differential pressure measurement circuit board and binding post, flange formula mounting disc (A) install in on pressure pipe (4) lateral wall, wind vane (11) set up in business turn over wind detects mouth (B) bottom.

2. The pipeline wind speed transmitter based on the micro differential pressure principle as claimed in claim 1, wherein the flange type mounting plate (a) is provided with a hole (7) for inserting the pressure pipe in the middle and a screw fixing hole (8) on the side, and when in use, the flange type mounting plate (a) is mounted on the pressure pipe (4) and is screwed and fixed on the flange type mounting plate (a).

3. The pipeline wind speed transmitter based on the micro differential pressure principle according to claim 2, wherein the flange type mounting plate (A) is provided with three holes (9) for fixing the wind pipe by screws at the periphery thereof, and is used for mounting the flange type mounting plate (A) on the wind pipe.

4. The pipeline wind speed transmitter based on the micro differential pressure principle as claimed in claim 3, wherein the wind inlet and outlet detection port (B) is embedded on the pressure pipe (4).

5. The pipeline wind speed transmitter based on the micro differential pressure principle of claim 4, wherein the pipeline wind speed measurement range of the transmitter body is 0-60 m/s.

6. The pipeline wind speed transmitter based on the micro differential pressure principle of claim 5, wherein the length of the transmitter body is 267 mm.

7. The pipeline wind speed transmitter based on the micro differential pressure principle of claim 6, wherein the main diameter of the transmitter body is 70mm, and the diameter of the flange type mounting plate (A) is 70 mm.

8. The pipeline wind speed transmitter based on the micro-differential pressure principle as claimed in claim 7, wherein the diameter of the wind inlet and outlet detection port (B) at the bottom of the transmitter is 20 mm.

9. The pipeline wind speed transmitter based on the micro differential pressure principle according to claim 8, wherein the length of the pressure pipe (4) is 170 mm.

10. The pipeline wind speed transmitter based on the micro differential pressure principle according to claim 9, wherein the maximum length of the explosion-proof housing (2) is 120 mm.