Opposite penetration type flue gas flow velocity monitor
By installing ultrasonic transducers on both sides of the flue and using the ultrasonic time-of-flight method to measure the flue gas velocity, the problem of traditional flue gas velocity monitors being affected by flue gas composition and temperature is solved, achieving higher accuracy and more stable velocity measurement.
Patent Information
- Application Number
- CN202423139810.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The measurement accuracy of traditional flue gas velocity monitors is easily affected by the composition and temperature of the flue gas, resulting in poor measurement stability.
A through-type flue gas velocity monitor is used. By installing ultrasonic transducers on both sides of the flue, the flow velocity is measured using the ultrasonic time-of-flight method, eliminating the influence of complex flow fields and realizing the measurement of the average flow velocity of the entire flue cross section.
It improves the accuracy and stability of flue gas velocity measurement, effectively eliminates the influence of complex flow fields such as eddies, fishtails, and stratification, and provides better cross-sectional velocity representativeness.
Smart Images
Figure CN223711635U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to flue gas flow velocity monitor technical field, specifically is a kind of through type flue gas flow velocity monitor. BACKGROUND
[0002] Flue gas flow velocity monitor is a kind of instrument for measuring gas flow velocity in pipeline, is widely used in environmental protection, health, labor, safety supervision, military, scientific research, education and other departments, for the measurement of gas flow velocity, flow, dynamic pressure, static pressure, temperature and other parameters of various boilers, kiln and exhaust duct, flue gas flow velocity monitor usually measures gas flow velocity by pitot tube method, pitot tube is a kind of instrument for measuring fluid flow velocity, it calculates flow velocity by measuring the pressure difference generated when fluid flows in pipeline, when flue gas flows in pipeline, the positive end of pitot tube is opposite to airflow direction, negative end is away from airflow direction, flue gas flows through the positive and negative air nozzles of pitot tube and generates pressure difference, microprocessor calculates the values of static pressure, flow velocity and air volume according to the collected dynamic pressure, total pressure and smoke temperature signal, so a kind of through type flue gas flow velocity monitor needs to be used;
[0003] Traditional flue gas flow velocity monitoring method, measurement accuracy is susceptible to flue gas composition and temperature influence and other problems, thereby leading to the measurement stability of existing monitor is poor. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of through type flue gas flow velocity monitor, reach the purpose of solving the problem in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of through type flue gas flow velocity monitor, including air cooling pipeline,
[0006] fixed mounting in the acquisition machine case of the air cooling pipeline one end;
[0007] And monitoring assembly is arranged at the lateral position of the air cooling pipeline;
[0008] The monitoring assembly includes monitoring mechanism arranged at the lateral position of air cooling pipeline.
[0009] Preferably, the monitoring mechanism includes sensor support rod, air cooling inlet and condensate water drain hole, the sensor support rod is fixedly installed on the inner wall of air cooling pipeline, one end of the sensor support rod is provided with PT temperature control sensor, one end of the sensor support rod is provided with ultrasonic transducer.
[0010] Preferably, the air cooling inlet is opened in the side wall of air cooling pipeline, and the inner wall of the air cooling inlet is communicated with the inside of the air cooling pipeline.
[0011] Preferably, the condensate drainage hole is arranged on the side wall of the air cooling pipe, and the inner wall of the condensate drainage hole is arranged in communication with the inside of the air cooling pipe.
[0012] Preferably, the side wall of the ultrasonic transducer is provided with a titanium alloy emitting surface, and the PT temperature control sensor is connected with the ultrasonic transducer.
[0013] Preferably, the number of the collection cases is two, and the two collection cases are equal in shape and size.
[0014] Preferably, the side wall of the air cooling pipe is fixedly provided with a mounting flange, one end of the air cooling pipe is connected with a flue through the flange, the inner wall of the flue is arranged in communication with the inside of the air cooling pipe, and the side wall of the flue is fixedly provided with a monitoring host.
[0015] The utility model provides a kind of through type flue gas flow velocity monitor. It has the following beneficial effects:
[0016] (1), the utility model discloses a monitoring mechanism constitutes a transducer as a whole, wherein position connects a flue, a pair of transducers are installed at the two sides of the flue at a certain angle, one is in the upstream of flue gas, and one is in the downstream of flue gas, and ultrasonic waves are alternately emitted and received, the flow velocity of flue gas is measured according to the principle of ultrasonic time difference method, the measurement path crosses the diameter of the entire flue, and double sound channels x type or even multiple sound channel installation can be set, which can effectively eliminate the influence of complex flow field (vortex, fish tail flow, stratification, etc.), the measurement result is equivalent to the average flow velocity of the entire flue cross section, has better cross section flow velocity representation, realizes better detection to flue gas flow velocity, solves the problems of traditional flue gas flow velocity monitoring method, measurement accuracy is susceptible to flue gas composition and temperature influence and other problems, thereby leading to the problem of poor measurement stability of existing monitor. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the appearance structure schematic view of the utility model;
[0018] Figure 2 It is the cross section structure schematic view of the air cooling pipe of the utility model;
[0019] Figure 3 It is the side view plane structure schematic view of the collection case of the utility model;
[0020] Figure 4 It is the utility model Figure 3 A-A plane sectional view of the utility model.
[0021] In the figure: 1, air-cooled pipeline; 2, acquisition case; 3, mounting flange; 4, monitoring assembly; 41, monitoring mechanism; 412, sensor support rod; 413, air-cooled inlet; 414, condensate water drainage hole; 415, titanium alloy emitting surface; 416, PT100 temperature control sensor; 417, ultrasonic transducer; 5, flue; 6, monitoring host. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.
[0023] Examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.
[0024] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0025] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0026] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific embodiments of the present application will be described with reference to the drawings.
[0027] Embodiment 1: The air-cooled pipeline; 2, acquisition case; 3, mounting flange; 4, monitoring assembly; 41, monitoring mechanism; 412, sensor support rod; 413, air-cooled inlet; 414, condensate water drainage hole; 415, titanium alloy emitting surface; 416, PT100 temperature control sensor; 417, ultrasonic transducer; 5, flue; 6, monitoring host of a kind of through type flue gas flow velocity monitor provided by the present application is as shown in the figure. Figures 1 to 4As shown: a pair of through flue gas flow velocity monitor, including air cooling pipeline 1, the side wall of air cooling pipeline 1 is fixedly installed with mounting flange 3, one end of air cooling pipeline 1 is connected with flue 5 through flange, the inner wall of flue 5 is communicated with the inside of air cooling pipeline 1, the side wall of flue 5 is fixedly installed with monitoring host 6,
[0028] The collecting machine box 2 fixedly installed at one end of the air cooling pipeline 1, the number of collecting machine box 2 is two, the shape and size of the two collecting machine box 2 are equal;
[0029] And the monitoring assembly 4 arranged at the side of the air cooling pipeline 1;
[0030] The monitoring assembly 4 includes a monitoring mechanism 41 arranged at the side of the air cooling pipeline 1.
[0031] The monitoring mechanism 41 includes a sensor support rod 412, an air cooling inlet 413 and a condensed water drainage hole 414, the sensor support rod 412 is fixedly installed on the inner wall of the air cooling pipeline 1, one end of the sensor support rod 412 is provided with a PT100 temperature control sensor 416, one end of the sensor support rod 412 is provided with an ultrasonic transducer 417.
[0032] The air cooling inlet 413 is arranged on the side wall of the air cooling pipeline 1, and the inner wall of the air cooling inlet 413 is communicated with the inside of the air cooling pipeline 1.
[0033] The condensed water drainage hole 414 is arranged on the side wall of the air cooling pipeline 1, and the inner wall of the condensed water drainage hole 414 is communicated with the inside of the air cooling pipeline 1.
[0034] The side wall of the ultrasonic transducer 417 is provided with a titanium alloy emitting surface 415, and the PT100 temperature control sensor 416 is connected with the ultrasonic transducer 417.
[0035] In the specific implementation process, when the device is used, the monitoring mechanism 41 constitutes a transducer as a whole, one flue is connected to the position, a pair of transducers are installed on the two sides of the flue at a certain angle, one on the upstream of the flue gas and one on the downstream of the flue gas, and the ultrasonic waves are alternately emitted and received, the flue gas flow velocity is measured according to the time difference method principle, the measurement path crosses the entire flue diameter, and double sound channels x type or even multiple sound channels can be arranged, which can effectively eliminate the influence of complex flow field vortex, fish tail flow, stratification and the like, and the measurement result is equivalent to the average flow velocity of the entire flue cross section, so that better cross section flow velocity representation is realized, and the flue gas flow velocity is better detected.
[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
[0037] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A through-type flue gas flow rate monitor, comprising a forced air cooling pipeline (1), a collection cabinet (2) fixedly installed at one end of the forced air cooling pipeline (1); and a monitoring assembly (4) arranged at a side position of the forced air cooling pipeline (1); characterized in that: the monitoring assembly (4) comprises a monitoring mechanism (41) arranged at a side position of the forced air cooling pipeline (1), the monitoring mechanism (41) comprising a sensor support rod (412), a forced air cooling inlet (413) and a condensed water drainage hole (414), the sensor support rod (412) being fixedly installed on an inner wall of the forced air cooling pipeline (1), one end of the sensor support rod (412) being provided with a PT100 temperature control sensor (416), and one end of the sensor support rod (412) being provided with an ultrasonic transducer (417).
2. A through connector flue gas flow rate monitor according to claim 1, characterised in that: The forced air cooling inlet (413) is arranged on a side wall of the forced air cooling pipeline (1), and an inner wall of the forced air cooling inlet (413) is in communication with the inside of the forced air cooling pipeline (1).
3. A through connector flue gas flow rate monitor according to claim 2, wherein: The condensed water drainage hole (414) is arranged on a side wall of the forced air cooling pipeline (1), and an inner wall of the condensed water drainage hole (414) is in communication with the inside of the forced air cooling pipeline (1).
4. A through connector flue gas flow rate monitor according to claim 3, wherein: A titanium alloy emitting surface (415) is arranged on a side wall of the ultrasonic transducer (417), and the PT100 temperature control sensor (416) is connected with the ultrasonic transducer (417).
5. A through connector flue gas flow rate monitor according to claim 1, wherein: The number of the collection cabinets (2) is two, and the shapes and sizes of the two collection cabinets (2) are equal.
6. A through connector flue gas flow rate monitor according to claim 1, wherein: A mounting flange (3) is fixedly installed on a side wall of the forced air cooling pipeline (1), one end of the forced air cooling pipeline (1) is connected with a flue (5) through the mounting flange, an inner wall of the flue (5) is in communication with the inside of the forced air cooling pipeline (1), and a monitoring host (6) is fixedly installed on a side wall of the flue (5).