Flue gas flow velocity and flow measuring device

Abstract

The utility model relates to the technical field of flue gas measurement, and discloses a flue gas flow velocity and flow measuring device which comprises a measuring instrument body, a static pressure sensor, a dynamic pressure sensor and a connecting line, the outer surface of the static pressure sensor is sleeved with a first sleeve, and the outer surface of the dynamic pressure sensor is sleeved with a second sleeve. According to the static pressure sensor cleaning device, swept smoke is introduced into the backflow pipe and input into the first sleeve, the first confluence plate blows the blade assembly located in the first sleeve to rotate, therefore, the cleaning assembly located in the first sleeve rotates, cleaning of the static pressure sensor is completed, the entering smoke finally flows back into the smoke pipe through the backflow hole, and the cleaning efficiency is improved. Under the condition that power equipment is not additionally arranged, the flow speed of flue gas is effectively measured, the blade assembly is pushed to rotate after measurement, and backflow design is matched, so that synchronous cleaning of the static pressure sensor and the dynamic pressure sensor is completed, the situation that a large number of solid particles are attached to the surface to affect the measurement effect is avoided, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas measurement, and more specifically to a flue gas flow velocity and flow measurement device. Background Art

[0002] The flue gas flow rate measurement device adopts the differential pressure principle and cooperates with a dynamic pressure sensor and a static pressure sensor to measure the flow rate using the flue gas guided into the curved pipe.

[0003] In the prior art, the flue gas velocity and flow measurement device, during use, both the dynamic pressure sensor and the static pressure sensor need to place the sensing end in the flue gas duct for contact measurement. Due to the large amount of dust and particles in the flue gas, a large amount of particles are attached to the sensor during the continuous measurement process, affecting the subsequent measurement of the sensor and reducing the measurement accuracy of the velocity and flow. When there is an impact of attachments, it is usually difficult to clean it by itself, and it is often necessary to stop and disassemble. The disassembly operation is more troublesome and easily destroys the sealing of the installation place, resulting in poor use effect. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a flue gas velocity flow measurement device, which has the advantages of rapid cleaning without disassembly and processing of reflux pipeline deposits.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flue gas flow velocity and flow measurement device, comprising a measuring instrument body, a static pressure sensor, a dynamic pressure sensor and a connecting line, the outer surface of the static pressure sensor is sleeved with a No. 1 sleeve, the outer surface of the dynamic pressure sensor is sleeved with a No. 2 sleeve, the interiors of the No. 1 sleeve and the No. 2 sleeve are both fixedly installed with support tubes, the two support tubes are respectively fixedly connected to the static pressure sensor and the dynamic pressure sensor, the outer surfaces of the static pressure sensor and the outer surfaces of the dynamic pressure sensor are both rotatably sleeved with cleaning components, the two cleaning components are respectively rotatably sleeved inside the No. 1 sleeve and the No. 2 sleeve, the outer surface of the support tube is rotatably provided with a blade component, the blade component is fixedly connected to the cleaning component, a return pipe is fixedly connected between the No. 1 sleeve and the No. 2 sleeve, the end face of the No. 2 sleeve is fixedly connected with a curved pipe, and a conducting port is opened inside the dynamic pressure sensor.

[0006] As a preferred technical solution of the utility model, the number of the connecting wires is two, one of the connecting wires is electrically connected between the static pressure sensor and the measuring instrument body, and the other connecting wire is electrically connected between the dynamic pressure sensor and the measuring instrument body, and one end of the two connecting wires are both sleeved in the support tube.

[0007] As a preferred technical solution of the utility model, the blade assembly includes a rotating blade, an inner ring groove and a retaining ring, the retaining ring is fixedly sleeved on the outer surface of the support tube, the inner ring groove is opened on the inner surface of the rotating blade, and the retaining ring is rotatably sleeved in the inner ring groove.

[0008] As a preferred technical solution of the utility model, the cleaning assembly includes a connecting arm, a sealing ring sleeve, a connecting ring, a mounting arm and a cleaning brush, the connecting arm is fixedly connected to the rotating blade, the sealing ring sleeve is fixedly connected to the connecting arm, the connecting ring is fixedly connected to the sealing ring sleeve, the mounting arm is fixedly connected to the connecting ring, the cleaning brush is fixedly connected to the inner side surface of the mounting arm, and the mounting arms are distributed at equal intervals around.

[0009] As a preferred technical solution of the utility model, the inner fixed sleeve of the No. 1 sleeve is connected to the No. 1 busbar, the inner fixed sleeve of the No. 2 sleeve is connected to the No. 2 busbar, the No. 1 busbar is located on the left side of the corresponding blade assembly, the No. 2 busbar is located on the right side of the corresponding blade assembly, and the outer surface of the No. 1 sleeve is provided with a return hole.

[0010] As a preferred technical solution of the utility model, an assembly cavity is provided on the outer surface of the reflux pipe, the assembly cavity is close to the dynamic pressure sensor, and a filter collection component is provided inside the assembly cavity.

[0011] As a preferred technical solution of the utility model, the filtering and collecting assembly includes a sealing sleeve, a collecting plate and a filter hole. The sealing sleeve is fixedly sleeved on the outer surface of the reflux pipe and is connected with the assembly cavity. The filter hole is opened on the left side of the collecting plate. The collecting plate is movably sleeved in the assembly cavity. The right side and the interior of the collecting plate are respectively provided with an inlet hole and a storage cavity. The two sides of the storage cavity are respectively connected with the inlet hole and the filter hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model allows high-speed flue gas to quickly enter the interior of the No. 2 sleeve through the guide port after completing the measurement, and the flue gas with a certain flow rate drives the blade assembly located inside the No. 1 sleeve to rotate, and the blade assembly drives the connecting arm to rotate, thereby rotating the cleaning assembly located between the No. 2 sleeve and the dynamic pressure sensor, and the connecting arm drives the sealing ring sleeve, the connecting ring, the mounting arm and the cleaning brush to rotate, and the cleaning brush located outside the dynamic pressure sensor quickly completes the rotational cleaning, and the purged flue gas passes into the reflux pipe and is input into the No. 1 sleeve, and blows the blade assembly located in the No. 1 sleeve to rotate through the No. 1 manifold, thereby rotating the cleaning assembly located in the No. 1 sleeve, and completing the cleaning of the static pressure sensor, and the entering flue gas eventually flows back to the flue gas pipe through the reflux hole, and effectively utilizes the flow velocity of the measured flue gas without adding power equipment, and drives the blade assembly to rotate after measurement, and cooperates with the reflux design, thereby completing the synchronous cleaning of the static pressure sensor and the dynamic pressure sensor, avoiding a large amount of solid particles adhering to the surface to affect the measurement effect, and the use effect is good.

[0014] 2. The utility model, when measuring in a cycle, with the circulation of smoke, the smoke particles are filtered in the filter collection assembly in the reflux pipe and concentrated in the storage cavity of the collection plate. When it is necessary to clean out, the smoke circulation is stopped, the bolts on the outside of the sealing sleeve are loosened, the collection plate is taken out, and the transfer process is completed. In fact, the filtering and cleaning of smoke during emission after measurement is greatly improved, and the blockage of smoke guide rolls during measurement is avoided, and the stability of continuous measurement and smoke reflux is improved. At the same time, the surface clean adhesion at the dynamic pressure sensor is effectively cleaned out directly to avoid accumulation in the curved pipe, further improving the cleaning effect and maintaining stable measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the first sleeve and the static pressure sensor of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection between the blade assembly and the cleaning assembly of the utility model;

[0018] Figure 4 It is an exploded schematic diagram of the blade assembly of the utility model;

[0019] Figure 5 It is a cross-sectional view of the second sleeve and the dynamic pressure sensor of the utility model;

[0020] Figure 6 It is an exploded schematic diagram of the return pipe and the filter collection assembly of the utility model;

[0021] Figure 7 It is an exploded schematic diagram of the filter collection assembly of the utility model.

[0022] In the figure: 1. Measuring instrument body; 2. Static pressure sensor; 3. Dynamic pressure sensor; 4. Connecting wire; 5. No. 1 sleeve; 6. No. 2 sleeve; 7. Support tube; 8. Blade assembly; 81. Rotating blade; 82. Inner ring groove; 83. Retaining ring; 9. Cleaning assembly; 91. Connecting arm; 92. Sealing ring sleeve; 93. Connecting ring; 94. Mounting arm; 95. Cleaning brush; 10. No. 1 manifold; 11. No. 2 manifold; 12. Conducting port; 13. Curved pipe; 14. Return pipe; 15. Filter collection assembly; 151. Sealing sleeve; 152. Collection plate; 153. Filter hole; 16. Assembly cavity. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 7 As shown, the utility model provides a flue gas velocity flow measurement device, including a measuring instrument body 1, a static pressure sensor 2, a dynamic pressure sensor 3 and a connecting line 4, the outer surface of the static pressure sensor 2 is sleeved with a No. 1 sleeve 5, the outer surface of the dynamic pressure sensor 3 is sleeved with a No. 2 sleeve 6, the interiors of the No. 1 sleeve 5 and the No. 2 sleeve 6 are both fixedly installed with support tubes 7, the two support tubes 7 are respectively fixedly connected to the static pressure sensor 2 and the dynamic pressure sensor 3, the outer surfaces of the static pressure sensor 2 and the dynamic pressure sensor 3 are both rotatably sleeved with cleaning components 9, and the two The cleaning component 9 is rotatably sleeved inside the No. 1 sleeve 5 and the No. 2 sleeve 6 respectively, and a blade component 8 is rotatably provided on the outer surface of the support tube 7. The blade component 8 is fixedly connected to the cleaning component 9. A return pipe 14 is fixedly connected between the No. 1 sleeve 5 and the No. 2 sleeve 6. A curved pipe 13 is fixedly connected to the end face of the No. 2 sleeve 6. A conducting port 12 is opened inside the dynamic pressure sensor 3. Both the static pressure sensor 2 and the dynamic pressure sensor 3 are existing differential pressure speed detection mechanisms, and the specific model is HCCY100-04-IBBT Horswell micro differential pressure transmitter.

[0025] Among them, there are two connecting wires 4, one connecting wire 4 is electrically connected between the static pressure sensor 2 and the measuring instrument body 1, and the other connecting wire 4 is electrically connected between the dynamic pressure sensor 3 and the measuring instrument body 1, and one end of the two connecting wires 4 are both sleeved in the support tube 7.

[0026] The static pressure sensor 2 and the first sleeve 5 are fixed and stable, and the dynamic pressure sensor 3 and the second sleeve 6 are fixed and stable through the support tube 7, while the insertion of the connecting line is maintained and the rotation installation of the blade assembly 8 is supported.

[0027] The blade assembly 8 includes a rotating blade 81 , an inner annular groove 82 and a retaining ring 83 . The retaining ring 83 is fixedly sleeved on the outer surface of the support tube 7 . The inner annular groove 82 is provided on the inner surface of the rotating blade 81 . The retaining ring 83 is rotatably sleeved in the inner annular groove 82 .

[0028] The blade assembly 8 is driven to rotate by the flowing smoke to provide a rotational force, and the inner ring groove 82 and the retaining ring 83 are rotated and sleeved to maintain rotation stability.

[0029] Among them, the cleaning component 9 includes a connecting arm 91, a sealing ring sleeve 92, a connecting ring 93, a mounting arm 94 and a cleaning brush 95. The connecting arm 91 is fixedly connected to the rotating blade 81, the sealing ring sleeve 92 is fixedly connected to the connecting arm 91, the connecting ring 93 is fixedly connected to the sealing ring sleeve 92, the mounting arm 94 is fixedly connected to the connecting ring 93, and the cleaning brush 95 is fixedly connected to the inner side surface of the mounting arm 94, and the mounting arm 94 is distributed around with equal intervals.

[0030] The cleaning components 9 are respectively in the No. 1 sleeve 5 and the No. 2 sleeve 6 to maintain rotation stability and complete rotation cleaning. The inner and outer surfaces of the sealing ring sleeve 92 are both provided with sealing rings to improve the dynamic seal under rotation.

[0031] Among them, the inner fixed sleeve of the No. 1 sleeve 5 is connected with the No. 1 busbar 10, the inner fixed sleeve of the No. 2 sleeve 6 is connected with the No. 2 busbar 11, the No. 1 busbar 10 is located on the left side of the corresponding blade assembly 8, the No. 2 busbar 11 is located on the right side of the corresponding blade assembly 8, and the outer surface of the No. 1 sleeve 5 is provided with a return hole.

[0032] The reflow hole is used to re-input the loop flue gas into the flue gas duct. The No. 1 convergence plate 10 and the No. 2 convergence plate 11 are both used to guide the flow position of the flue gas to improve the rotation effect of the pushing blade assembly 8. The specific positions of the No. 1 convergence plate 10 and the No. 2 convergence plate 11 are adaptively arranged according to the direction of the flue gas flow.

[0033] An assembly cavity 16 is formed on the outer surface of the reflux pipe 14 . The assembly cavity 16 is close to the dynamic pressure sensor 3 . A filter collection assembly 15 is formed inside the assembly cavity 16 .

[0034] The reflux pipe 14 processes the measured smoke reflux, and the assembly cavity 16 completes the assembly of the filter collection assembly 15 .

[0035] Among them, the filtering and collecting assembly 15 includes a sealing sleeve 151, a collecting plate 152 and a filter hole 153. The sealing sleeve 151 is fixedly sleeved on the outer surface of the return pipe 14 and is connected with the assembly cavity 16. The filter hole 153 is opened on the left side of the collecting plate 152. The collecting plate 152 is movably sleeved in the assembly cavity 16. The right side and the inside of the collecting plate 152 are respectively provided with an entry hole and a storage cavity. The two sides of the storage cavity are respectively connected with the entry hole and the filter hole 153.

[0036] The filter collection assembly 15 completes the filter collection during smoke reflux, and realizes the separation treatment of the particles attached to the surface of the dynamic pressure sensor 3 after cleaning. The cooperation of the entry hole and the storage cavity improves the collection effect of the smoke particles.

[0037] The working principle and use process of the utility model are as follows: when measuring, as the flue gas in the flue gas duct contacts the static pressure sensor 2 upstream, the static pressure measurement is completed, and the flue gas located at the downstream enters the curved pipe 13, and the dynamic pressure measurement is completed at the dynamic pressure sensor 3, and the high-speed flue gas after the measurement quickly enters the interior of the No. 2 sleeve 6 through the guide port 12, and the flue gas with a certain flow rate drives the blade assembly 8 located inside the No. 1 sleeve 5 to rotate, and the blade assembly 8 drives the connecting arm 91 to rotate, so that the cleaning assembly 9 located between the No. 2 sleeve 6 and the dynamic pressure sensor 3 rotates, and the connecting arm 91 drives the sealing ring sleeve 92, the connecting ring 93, the mounting arm 94 and the cleaning brush 95 to rotate, and the dynamic pressure sensor 3 The cleaning brush 95 on the outside quickly completes the rotation cleaning, and the purged flue gas is passed into the return pipe 14 and input into the No. 1 sleeve 5, and blows the blade assembly 8 located in the No. 1 sleeve 5 to rotate through the No. 1 manifold 10, so that the cleaning assembly 9 located in the No. 1 sleeve 5 rotates and completes the cleaning of the static pressure sensor 2. The incoming flue gas finally flows back to the flue pipe through the return hole; when the measurement is circulated, as the flue gas circulates, the flue gas particles are filtered in the filter collection assembly 15 in the return pipe 14 and are concentrated in the storage cavity of the collection plate 152. When it needs to be cleaned out, the flue gas circulation is stopped, and the bolts on the outside of the sealing sleeve 151 are loosened, and the collection plate 152 is taken out to complete the transfer process.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas velocity flow measurement device, comprising a measuring instrument body (1), a static pressure sensor (2), a dynamic pressure sensor (3) and a connecting line (4), characterized in that: The outer surface of the static pressure sensor (2) is sleeved with a No. 1 sleeve (5), and the outer surface of the dynamic pressure sensor (3) is sleeved with a No. 2 sleeve (6). The No. 1 sleeve (5) and the No. 2 sleeve (6) are both fixedly installed with support tubes (7). The two support tubes (7) are respectively fixedly connected to the static pressure sensor (2) and the dynamic pressure sensor (3). The outer surfaces of the static pressure sensor (2) and the dynamic pressure sensor (3) are both rotatably sleeved with cleaning components (9). The two cleaning components (9) are respectively rotatably sleeved inside the No. 1 sleeve (5) and the No. 2 sleeve (6). The outer surface of the support tube (7) is rotatably provided with a blade component (8). The blade component (8) is fixedly connected to the cleaning component (9). A return pipe (14) is fixedly connected between the No. 1 sleeve (5) and the No. 2 sleeve (6). The end surface of the No. 2 sleeve (6) is fixedly connected with a curved pipe (13). A conduction port (12) is opened inside the dynamic pressure sensor (3).

2. A flue gas flow rate measuring device according to claim 1, characterized in that: The number of the connecting wires (4) is two, one of the connecting wires (4) is electrically connected between the static pressure sensor (2) and the measuring instrument body (1), and the other of the connecting wires (4) is electrically connected between the dynamic pressure sensor (3) and the measuring instrument body (1), and one end of the two connecting wires (4) is sleeved in the support tube (7).

3. A flue gas flow rate measuring device according to claim 2, characterized in that: The blade assembly (8) comprises a rotating blade (81), an inner ring groove (82) and a snap ring (83); the snap ring (83) is fixedly sleeved on the outer surface of the support tube (7); the inner ring groove (82) is formed on the inner surface of the rotating blade (81); and the snap ring (83) is rotatably sleeved in the inner ring groove (82).

4. A flue gas flow velocity measurement device according to claim 3, characterized in that: The cleaning assembly (9) comprises a connecting arm (91), a sealing ring sleeve (92), a connecting ring (93), a mounting arm (94) and a cleaning brush (95); the connecting arm (91) is fixedly connected to the rotating blade (81); the sealing ring sleeve (92) is fixedly connected to the connecting arm (91); the connecting ring (93) is fixedly connected to the sealing ring sleeve (92); the mounting arm (94) is fixedly connected to the connecting ring (93); the cleaning brush (95) is fixedly connected to the inner side surface of the mounting arm (94); and the mounting arm (94) is distributed at equal intervals around the mounting arm (94).

5. A flue gas velocity flow measurement device according to claim 4, characterized in that: The first sleeve (5) is internally fixedly sleeved with a first collector plate (10), and the second sleeve (6) is internally fixedly sleeved with a second collector plate (11). The first collector plate (10) is located on the left side of the corresponding blade assembly (8), and the second collector plate (11) is located on the right side of the corresponding blade assembly (8). The outer surface of the first sleeve (5) is provided with a return hole.

6. A flue gas velocity flow measurement device according to claim 5, characterized in that: An assembly cavity (16) is provided on the outer surface of the return pipe (14), the assembly cavity (16) is close to the dynamic pressure sensor (3), and a filter collection component (15) is provided inside the assembly cavity (16).

7. A flue gas velocity flow measurement device according to claim 6, characterized in that: The filtering and collecting assembly (15) comprises a sealing sleeve (151), a collecting plate (152) and a filter hole (153); the sealing sleeve (151) is fixedly sleeved on the outer surface of the return pipe (14) and is connected to the assembly cavity (16); the filter hole (153) is provided on the left side surface of the collecting plate (152); the collecting plate (152) is movably sleeved in the assembly cavity (16); the right side surface and the interior of the collecting plate (152) are respectively provided with an inlet hole and a storage cavity; the two sides of the storage cavity are respectively connected to the inlet hole and the filter hole (153).

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