Adjustable porous flue gas flow measuring device

Abstract

The utility model discloses an adjustable porous flue gas flow measuring device which comprises a flue gas pipeline, the middle end of the top of the flue gas pipeline is fixedly connected with a mounting seat, the middle end of the mounting seat is in threaded connection with a threaded seat, and the middle end of the threaded seat is fixedly connected with a measuring cylinder. Through the arrangement of the inner cylinder, the gas guide hole, the measuring cylinder, the total pressure hole, the static pressure hole and the pressure sensor, personnel can conveniently and preliminarily calculate the flow of smoke when the smoke flows through the interior of the smoke pipeline; under the matching action of a servo motor, an adjusting screw rod, an inner cylinder, a measuring cylinder, a pressure sensor, a partition plate, a gas guide hole, a total pressure hole and a static pressure hole, personnel can conveniently measure the flow of flue gas flowing through different positions in the flue gas pipeline while the flue gas flows through the flue gas pipeline; and the final flue gas flow data is obtained in a mode of selecting an average value, so that the accuracy of flue gas measurement operation is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas flow measurement technical field, concretely is a kind of adjustable porous flue gas flow measuring device. BACKGROUND

[0002] Flue gas flow measurement refers to the process of measuring the exhaust emission generated in the combustion process, which mainly detects and monitors the flow of exhaust emission to ensure that the exhaust emission in the production process meets the environmental protection standards. Currently, pitot tube flowmeter is often used in the process of flue gas flow measurement. The flow rate and flow are calculated by measuring the pressure change generated when the fluid flows through the probe. The total pressure hole in front of the probe measures the total pressure of the fluid (also known as stagnation pressure), while the static pressure hole on the side of the probe measures the static pressure of the fluid. The difference between the total pressure and the static pressure is called dynamic pressure, which reflects the energy of the fluid velocity. Since the positions of the total pressure hole and the static pressure hole inside the pipe are fixed during the measurement of flue gas flow using the pitot tube flowmeter, it is not possible to effectively detect the flue gas flow at different positions according to the actual measurement requirements, resulting in incomplete flue gas flow measurement and seriously affecting the accuracy of the flow measurement operation. SUMMARY

[0003] The utility model aims at providing a kind of adjustable porous flue gas flow measuring device, with the advantages of being able to measure the flow of flue gas at different positions inside the pipe, effectively improving the comprehensiveness and accuracy of the flow measurement operation.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an adjustable porous flue gas flow measuring device, comprising a flue gas pipeline, a mounting seat is fixedly connected to the middle end of the top of the flue gas pipeline, a threaded seat is threadedly connected to the middle end of the mounting seat, a measuring cylinder is fixedly connected to the middle end of the threaded seat, a total pressure hole is formed in the lower end of the left side of the measuring cylinder, a static pressure hole is formed in the lower end of the right side of the measuring cylinder, the number of total pressure holes and static pressure holes is four, an inner cylinder is movably connected to the lower end of the inner cavity of the measuring cylinder, a partition is fixedly connected to the middle end of the inner cavity of the inner cylinder, gas guide holes are formed in the lower end of both sides of the inner cylinder, pressure sensors are fixedly installed on both ends of the top of the inner cylinder, a servo motor is fixedly installed on the middle end of the top of the outer surface of the measuring cylinder, an adjusting screw is fixedly installed on the output end of the servo motor, and the lower end of the adjusting screw is threadedly connected to the middle end of the top of the inner cylinder.

[0005] As a preferred scheme, a conduit is movably connected to both ends of the top of the measuring cylinder, the bottom of the conduit is fixedly installed on the top of the pressure sensor, a transmission line is fixedly installed on the middle end of the top of the pressure sensor, and the surface of the transmission line is movably connected to the inner cavity of the conduit.

[0006] As a preferred scheme, the top of the conduit is fixedly connected with a rubber protective sleeve, and the inner cavity of the rubber protective sleeve is sleeved on the upper end of the transmission line.

[0007] As a preferred scheme, the upper end of the outer surface of the inner cylinder is fixedly connected with a rubber sealing ring, and the surface of the rubber sealing ring is movably connected to the inner cavity of the measuring cylinder.

[0008] As a preferred scheme, the upper end of the threaded seat is fixedly connected with a rubber sealing gasket, the bottom of the rubber sealing gasket is movably connected to the top of the mounting seat, and the top of the threaded seat is fixedly connected with a hexagonal fixing block.

[0009] As a preferred scheme, the two sides of the flue gas pipeline are fixedly connected with flange plates, and the surface of the flange plate is provided with a mounting hole.

[0010] As a preferred scheme, the middle end of the partition plate is provided with a containing cavity.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1、The utility model discloses a flue gas flow measuring device, which comprises an inner cylinder, a gas guiding hole, a measuring cylinder, a total pressure hole, a static pressure hole and a pressure sensor.

[0013] 2、The utility model discloses a flue gas flow measuring device, which comprises an inner cylinder, a gas guiding hole, a measuring cylinder, a total pressure hole, a static pressure hole and a pressure sensor. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective view of the utility model.

[0015] Figure 2 It is the front local sectional view structural schematic diagram of the utility model;

[0016] Figure 3 It is the measuring cylinder local structure schematic diagram of the utility model;

[0017] Figure 4 It is the front local sectional view structural schematic diagram of the measuring cylinder of the utility model;

[0018] Figure 5 It is the A place local enlarged view in the utility model Figure 4 .

[0019] In the drawing: 1, flue gas pipeline;2, flange plate;3, mounting seat;4, threaded seat;5, hexagonal fixed block;6, measuring cylinder;7, rubber sealing pad;8, total pressure hole;9, transmission line;10, rubber protective sleeve;11, guide pipe;12, servo motor;13, adjusting screw;14, gas guide hole;15, partition;16, containing cavity;17, inner cylinder;18, rubber sealing ring;19, pressure sensor;20, static pressure hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the utility model. The "in one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an independent or selective embodiment that excludes other embodiments.

[0022] Embodiment one:

[0023] Please refer to Figures 1-5As shown, the utility model provides a kind of adjustable porous flue gas flow measuring device, including flue gas pipeline 1, the middle end of the top of flue gas pipeline 1 is fixedly connected with mounting seat 3, the middle end of mounting seat 3 is screw-connected with threaded seat 4, the middle end of threaded seat 4 is fixedly connected with measuring cylinder 6, the lower end of the left side of measuring cylinder 6 is equipped with total pressure hole 8, the lower end of the right side of measuring cylinder 6 is equipped with static pressure hole 20, the number of total pressure hole 8 and static pressure hole 20 is four, the lower end of the inner chamber of measuring cylinder 6 is movably connected with inner cylinder 17, the middle end of the inner chamber of inner cylinder 17 is fixedly connected with baffle 15, the lower end of the both sides of inner cylinder 17 is equipped with gas guide hole 14, the both ends of the top of inner cylinder 17 are fixedly installed with pressure sensor 19, the middle end of the top of the outer surface of measuring cylinder 6 is fixedly installed with servo motor 12, the output end of servo motor 12 is fixedly installed with adjusting screw rod 13, the lower end of adjusting screw rod 13 is screw-connected to the middle end of the top of inner cylinder 17.

[0024] In the technical scheme, by the setting of inner cylinder 17, gas guide hole 14, measuring cylinder 6, total pressure hole 8, static pressure hole 20 and pressure sensor 19, the flow of flue gas can be calculated preliminarily while the flue gas flows through the inside of flue gas pipeline 1, and under the cooperation of servo motor 12, adjusting screw rod 13, inner cylinder 17, measuring cylinder 6, pressure sensor 19, baffle 15, gas guide hole 14, total pressure hole 8 and static pressure hole 20, the flow of flue gas at different positions in flue gas pipeline 1 can be measured while the flue gas flows through the inside of flue gas pipeline 1, and the final flue gas flow data can be obtained by selecting the average value, so that the accuracy of flue gas measurement operation is effectively improved, and the utility model is beneficial to use.

[0025] Embodiment two:

[0026] Based on embodiment one, the utility model as Figures 1-5 Shown, disclosed measuring cylinder 6 top's both ends are movably connected with guide pipe 11, the bottom of guide pipe 11 is fixedly installed in the top of pressure sensor 19, the middle end of the top of pressure sensor 19 is fixedly installed with transmission line 9, the surface of transmission line 9 is movably connected in the inner chamber of guide pipe 11, the top of guide pipe 11 is fixedly connected with rubber protective sleeve 10, the inner chamber of rubber protective sleeve 10 is sleeved in the upper end of transmission line 9, the upper end of the outer surface of inner cylinder 17 is fixedly connected with rubber sealing ring 18, the surface of rubber sealing ring 18 is movably connected in the inner chamber of measuring cylinder 6, the upper end of threaded seat 4 is fixedly connected with rubber sealing washer 7, the bottom of rubber sealing washer 7 is movably connected in the top of mounting seat 3, the top of threaded seat 4 is fixedly connected with hexagonal fixed block 5, the both sides of flue gas pipeline 1 are fixedly connected with flange plate 2, the surface of flange plate 2 is equipped with mounting hole, the middle end of baffle 15 is equipped with containing cavity 16.

[0027] The technical scheme is characterized in that: the transmission line 9 is arranged, so that the signal measured by the pressure sensor 19 can be transmitted; the conduit 11 is arranged, so that the transmission line 9 can be arranged and protected, and the transmission line 9 is prevented from being squeezed and rubbed between the transmission line 9 and the measuring cylinder 6 during movement; the rubber protective sleeve 10 is arranged, so that the transmission line 9 and the conduit 11 at the top of the conduit 11 can be effectively protected; the rubber sealing ring 18 is arranged, so that the sealing performance of the contact between the upper end of the inner cylinder 17 and the measuring cylinder 6 is effectively improved, and leakage of flue gas from the upper end of the measuring cylinder 6 to the outside is prevented; the rubber sealing gasket 7 is arranged, so that the sealing performance of the connection between the threaded seat 4 and the mounting seat 3 is effectively improved; the hexagonal fixing block 5 is arranged, so that the threaded seat 4 and the mounting seat 3 can be conveniently installed and dismounted by personnel using a wrench or the like; the flange plate 2 and the mounting hole are arranged, so that the flue gas pipeline 1 can be conveniently installed and fixed by personnel; and the accommodating cavity 16 is arranged, so that the adjusting screw rod 13 can be accommodated.

[0028] The working principle of the utility model is: when the flue gas flows along the inner cavity of the flue gas pipeline 1 from left to right, because the gas guide holes 14 on both sides of the inner cylinder 17 are at the same level between the total pressure hole 8 and the static pressure hole 20 at the lowermost position of the measuring cylinder 6, the space pressure inside the inner cylinder 17 and on both sides of the partition plate 15 will have a difference during rapid flow of the flue gas, and the pressure on both sides of the partition plate 15 can be effectively measured under the action of the pressure sensor 19, so that the background personnel can preliminarily calculate the flue gas flow according to the pressure difference measured between the two groups of pressure sensors 19 and the diameter of the flue gas pipeline 1, then the servo motor 12 is controlled to work by the external PLC controller, the servo motor 12 can drive the adjusting screw rod 13 to rotate and can drive the inner cylinder 17 to move upwards along the inner cavity of the measuring cylinder 6, the movement of the inner cylinder 17 can drive the pressure sensor 19, the partition plate 15 and the gas guide hole 14 to move, so that the gas guide hole 14 can be horizontally overlapped with the total pressure hole 8 and the static pressure hole 20 at different positions in sequence, and the pressure inside the inner cylinder 17 and on both sides of the partition plate 15 can be effectively measured under the action of the pressure sensor 19 during the process of the gas guide hole 14 being horizontally overlapped with the total pressure hole 8 and the static pressure hole 20 at different positions in sequence, so that the background personnel can calculate multiple flue gas flows according to the multiple pressure difference data measured by the pressure sensor 19 and the diameter of the flue gas pipeline 1, and the final flue gas flow data is obtained by selecting the average value, so that the accuracy of the flue gas measurement operation is effectively improved, and the utility model is convenient for personnel to use.

[0029] It should be explained finally that the above embodiment is only used to illustrate the technical scheme of the utility model, and is not the limit of the protection scope of the utility model, although the utility model is explained in detail with reference to the preferred embodiment, the ordinary skilled in the art should understand that the technical scheme of the utility model can be modified or replaced equivalently, and does not deviate from the essence and scope of the technical scheme of the utility model.

Claims

1. An adjustable multi-hole flue gas flow measuring device comprising a flue gas duct (1), characterized in that: The middle end of the top of the flue gas pipeline (1) is fixedly connected with a mounting seat (3), the middle end of the mounting seat (3) is threadedly connected with a threaded seat (4), the middle end of the threaded seat (4) is fixedly connected with a measuring cylinder (6), the lower end of the left side of the measuring cylinder (6) is provided with total pressure holes (8), the lower end of the right side of the measuring cylinder (6) is provided with static pressure holes (20), the number of the total pressure holes (8) and the static pressure holes (20) is four, the lower end of the inner cavity of the measuring cylinder (6) is movably connected with an inner cylinder (17), the middle end of the inner cavity of the inner cylinder (17) is fixedly connected with a partition plate (15), the lower end of the two sides of the inner cylinder (17) is provided with air guide holes (14), the two ends of the top of the inner cylinder (17) are fixedly installed with pressure sensors (19), the middle end of the top of the outer surface of the measuring cylinder (6) is fixedly installed with a servo motor (12), the output end of the servo motor (12) is fixedly installed with an adjusting screw rod (13), the lower end of the adjusting screw rod (13) is threadedly connected with the middle end of the top of the inner cylinder (17).

2. The adjustable orifice flue gas flow measuring device of claim 1, wherein: The two ends of the top of the measuring cylinder (6) are movably connected with pipes (11), the bottom of the pipe (11) is fixedly installed on the top of the pressure sensor (19), the middle end of the top of the pressure sensor (19) is fixedly installed with a transmission line (9), the surface of the transmission line (9) is movably connected with the inner cavity of the pipe (11).

3. A porous flue gas flow measuring device according to claim 2, wherein: The top of the pipe (11) is fixedly connected with a rubber protective sleeve (10), the inner cavity of the rubber protective sleeve (10) is sleeved on the upper end of the transmission line (9).

4. The adjustable orifice flue gas flow measuring device of claim 1, wherein: The upper end of the outer surface of the inner cylinder (17) is fixedly connected with a rubber sealing ring (18), the surface of the rubber sealing ring (18) is movably connected with the inner cavity of the measuring cylinder (6).

5. The adjustable orifice flue gas flow measuring device of claim 1, wherein: The upper end of the threaded seat (4) is fixedly connected with a rubber sealing gasket (7), the bottom of the rubber sealing gasket (7) is movably connected with the top of the mounting seat (3), the top of the threaded seat (4) is fixedly connected with a hexagonal fixing block (5).

6. The adjustable orifice flue gas flow measuring device of claim 1, wherein: The two sides of the flue gas pipeline (1) are fixedly connected with flange plates (2), the surface of the flange plate (2) is provided with mounting holes.

7. The adjustable orifice flue gas flow measuring device of claim 1, wherein: The middle end of the partition plate (15) is provided with a containing cavity (16). The middle end of the partition plate (15) is provided with a containing cavity (16).

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