CN215866766U

CN215866766U - Oil smoke wind channel velocity of flow monitor

Info

Publication number: CN215866766U
Application number: CN202121811546.7U
Authority: CN
Inventors: 佟枘峰; 陈涛; 蔡宏忱; 靳照乾; 韩雪; 吴谦
Original assignee: Tianjin Zhiyi Times Technology Development Co ltd
Current assignee: Tianjin Zhiyi Times Technology Development Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-02-18
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses an oil smoke air duct flow rate monitor which comprises a pitot tube sampling head and a shell connected with the pitot tube sampling head, wherein one end of the pitot tube sampling head extends into the shell, a data acquisition board and a pressure difference sensor are arranged in the shell, the pitot tube sampling head comprises a main pressure pipe and a static pressure pipe, an oil smoke sampling pipe and a detection pipe are arranged on the outer sides of the main pressure pipe and the static pressure pipe, a temperature sensor is arranged at the front end of the detection pipe, and the data acquisition board is connected with the pressure difference sensor and the temperature sensor. The oil smoke temperature monitoring instrument is based on a pitot tube differential pressure principle, so that the oil smoke flow velocity can be monitored by the monitor in real time, the oil smoke temperature can be collected by the temperature sensor for use, the oil smoke temperature monitoring instrument can report the oil smoke temperature to the data acquisition instrument when required, and the oil smoke temperature monitoring instrument is convenient to use.

Description

Oil smoke wind channel velocity of flow monitor

Technical Field

The utility model relates to the technical field of flow velocity monitors, in particular to a flow velocity monitor for an oil smoke air channel.

Background

The oil smoke air channel flow velocity monitor is used for detecting oil smoke flow velocity, mainly uses a pitot tube constant-speed sampling gravimetric method to collect particles in a pipeline, uses a fixed-potential electrolysis method to qualitatively and quantitatively measure harmful gas, can be used for measuring the emission concentration/total amount of smoke dust (gas) of various boilers and kilns and the dust removal and desulfurization efficiency of equipment in departments of environmental protection, sanitation, labor, safety supervision, military, scientific research, education and the like, and can measure smoke dynamic pressure, smoke static pressure, pressure before a flowmeter, temperature before the flowmeter, smoke temperature, moisture content constant-speed suction flow velocity and the like.

However, the existing oil smoke duct flow velocity monitor is limited by its structure and technology, is inconvenient to use, and cannot meet the requirements of practical use, so that improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a monitor for flow velocity of an oil smoke air channel aiming at the technical defects in the prior art.

The technical scheme adopted for realizing the purpose of the utility model is as follows:

the utility model provides an oil smoke wind channel velocity of flow monitor, including pitot tube sampling head and with the casing that pitot tube sampling head is connected, the one end of pitot tube sampling head stretches into in the casing, be equipped with data acquisition board, differential pressure sensor in the casing, pitot tube sampling head includes that the owner presses pipe and static pressure pipe, the outside that the owner pressed pipe and static pressure pipe sets up oil smoke sampling pipe, search tube, temperature sensor is installed to the front end of search tube, differential pressure sensor and temperature sensor are connected to the data acquisition board.

As an optimal technical scheme, an aviation plug is arranged on the shell and is in communication connection with the data acquisition board so as to transmit data to the data acquisition instrument through a Modbus protocol.

As a preferred technical scheme, the shell is provided with a rear cover, and the rear cover and the shell body form a detachable connection through screws.

As a preferable technical solution, a sleeve is arranged outside the pitot tube sampling head, and the sleeve is fixed with the housing.

Preferably, the housing is a rectangular housing, and two opposite side surfaces of the upper cover plate extend outward and are bent downward, and the two opposite side surfaces extend rearward and horizontally with respect to one side surface of the upper cover plate rearward of the pitot tube sampling head.

As a preferable technical scheme, the air inlet ends of the main pressure pipe and the static pressure pipe are reversely and symmetrically bent, and the air inlet ends of the main pressure pipe and the static pressure pipe are reversely arranged and respectively form an arc-shaped air inlet.

The oil smoke temperature monitoring instrument is based on a pitot tube differential pressure principle, so that the oil smoke flow velocity can be monitored by the monitor in real time, the oil smoke temperature can be collected by the temperature sensor for use, the oil smoke temperature monitoring instrument can report the oil smoke temperature to the data acquisition instrument when required, and the oil smoke temperature monitoring instrument is convenient to use.

Drawings

FIG. 1 is a schematic diagram of a flow rate monitor for a lampblack duct according to an embodiment of the utility model;

FIG. 2 is a schematic diagram of an embodiment of the monitor for flow rate of oil smoke duct;

FIG. 3 is a front view of the appearance of the monitor for flow velocity of the lampblack duct according to the embodiment of the utility model;

fig. 4 is a sectional view of the line a-a of the lampblack duct flow velocity monitor of fig. 3 according to the embodiment of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1 to 4, an oil smoke duct flow rate monitor according to an embodiment of the present invention includes a pitot tube sampling head and a housing 9 connected to the pitot tube sampling head, one end of the pitot tube sampling head extends into the housing 9, a data acquisition board and a differential pressure sensor 2 are disposed in an internal cavity 3 of the housing, the pitot tube sampling head includes a main pressure pipe 13 and a static pressure pipe 1, an oil smoke sampling pipe 10 and a detection pipe 5 are disposed outside the main pressure pipe and the static pressure pipe, the other ends of the oil smoke sampling pipe and the detection pipe are both led into the housing, a temperature sensor 15 is installed at a front end of the detection pipe, and the data acquisition board is connected to the differential pressure sensor 2 and the temperature sensor 5 through a data acquisition line (not shown) to obtain data of oil smoke pressure and oil temperature acquired by the differential pressure sensor 2 and the temperature sensor 5.

Wherein, oil smoke sampling pipe 10 is as reserve pipe to in the future sampling use, if need use, can set up smoke sensor and be connected with it in the casing inside, carry out the flue gas sampling and detect. The other ends of the main pressure pipe 13 and the static pressure pipe 1 are connected with corresponding ports of the differential pressure sensor 2 through hoses.

It should be noted that, in the present invention, the temperature sensor is PT100, the differential pressure sensor 2 is a conventional commercially available differential pressure sensor, and the data acquisition board adopts a single chip microcomputer, such as an STM32 product, to acquire data

Preferably, the housing is provided with an aviation plug 4, and the aviation plug is in communication connection with the data acquisition board so as to transmit data to a corresponding data acquisition instrument through a Modbus protocol for use.

Preferably, the shell is provided with a rear cover 11, the rear cover and the shell body are detachably connected through a screw 12, and assembly, use and maintenance are facilitated.

According to the preferred technical scheme of the embodiment of the utility model, a sleeve 6 is arranged outside the pitot tube sampling head, a connecting plate 7 with a large diameter is fixedly arranged at the bottom of the sleeve, and the connecting plate 7 and the shell are fixed by bolts or screws.

Preferably, the housing is a rectangular housing, two opposite side surfaces of the cover plate at the upper end extend outwards and are bent downwards, and the two opposite side surfaces extend backwards and horizontally relative to one side surface behind the pitot tube sampling head.

Preferably, in the embodiment of the present invention, the air inlet ends of the main pressure pipe and the static pressure pipe are reversely and symmetrically bent, and the air inlet ends of the main pressure pipe and the static pressure pipe are reversely arranged to form an arc-shaped air inlet 14.

Specifically, the main pressure pipe and the static pressure pipe are arranged in the sleeve 6 in a spaced mode, the axes of the main pressure pipe and the static pressure pipe are parallel, the outer portion of the sleeve 6 is in close contact connection through a transition section and the rear outer wall of the sleeve, and the air inlet at the free end is bent reversely and separated. And one end of the sleeve and the connecting plate are provided with corresponding pipe orifices 8 for the main pressure pipe, the static pressure pipe and the gas sampling pipe, and the detection pipes respectively pass through and are separated from each other and do not interfere with each other.

During the use, the oil smoke flow direction is just to pitot tube dynamic pressure mouth, surveys the differential pressure survey through the pitot tube, thereby because differential pressure and velocity of flow positive correlation, thereby can obtain the velocity of flow (this is prior art, no longer gives details) in oil smoke wind channel through the differential pressure, the data acquisition board is then to gather the data that differential pressure sensor, temperature sensor PT100 obtained and handle, receives the instruction of reading the velocity of flow, sends data to the data acquisition appearance by modbus standard protocol.

It should be noted that, after the data acquisition instrument acquires the oil smoke temperature in real time through the PT100, the data acquisition instrument can also be set to further correct the oil smoke flow rate in real time by using the positive correlation relationship between the oil smoke temperature and the oil smoke flow rate, so as to ensure the accuracy and validity of the oil smoke flow rate monitoring value.

The oil smoke air channel flow velocity monitor provided by the embodiment of the utility model has the advantages of novel structure, accurate monitoring data, provision of real-time oil smoke temperature monitoring and convenience in use.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. Oil smoke wind channel velocity of flow monitor, its characterized in that, including pitot tube sampling head and with the casing that pitot tube sampling head is connected, the one end of pitot tube sampling head stretches into in the casing, be equipped with data acquisition board, differential pressure sensor in the casing, pitot tube sampling head includes main pressure pipe and static pressure pipe, the outside of main pressure pipe and static pressure pipe sets up oil smoke sampling pipe, search tube, temperature sensor is installed to the front end of search tube, differential pressure sensor and temperature sensor are connected to the data acquisition board.

2. The oil smoke wind channel flow velocity monitor according to claim 1, wherein the housing is provided with an aviation plug, and the aviation plug is in communication connection with the data acquisition board so as to transmit data to the data acquisition instrument through a Modbus protocol.

3. The oil smoke wind channel flow velocity monitor according to claim 1, wherein the housing is provided with a rear cover, and the rear cover is detachably connected with the housing main body through screws.

4. The soot air duct flow rate monitor according to claim 1, wherein a sleeve is disposed outside the pitot tube sampling head, and the sleeve is fixed to the housing.

5. The monitor of claim 1, wherein the housing is a rectangular housing, two opposite side surfaces of the cover plate at the upper end extend outward and are bent downward, and one side surface of the cover plate at the upper end extends rearward and horizontally relative to the rear side surface of the pitot tube sampling head.

6. The soot air duct flow velocity monitor according to claim 1, wherein the air inlet ends of the main pressure pipe and the static pressure pipe are symmetrically bent in opposite directions, and the air inlet ends of the main pressure pipe and the static pressure pipe are arranged in opposite directions and respectively form an arc-shaped air inlet.