Denitration flue gas monitoring system

Abstract

The utility model relates to a denitration flue gas monitoring system, which comprises a first shell, a second shell, a third shell and a fourth shell, the second shell is arranged at the top end of the first shell through a screw; the measuring end is arranged in the second shell; the mounting cylinder is arranged between the first shell and the second shell; the dust blocking barrel is arranged in the mounting barrel and comprises a dust blocking side rod; the stress block is arranged in the dust blocking cylinder and extends into the mounting cylinder; and the buffer spring is arranged between the stress block and the mounting cylinder. The first shell, the stress block, the dust blocking barrel and other components are arranged, air entering from the air inlet pipeline collides with the stress block through cooperation between the air inlet pipeline and the stress block, dust is separated from airflow in the collision process, and when the airflow moves in the direction of the dust blocking barrel after the direction of the airflow is changed, the dust is separated from the airflow. And the airflow and the dust are further separated.

Description

Technical Field

[0001] The utility model relates to the technical field of denitration detection equipment, and particularly relates to a denitration flue gas monitoring system. Background Art

[0002] Flue gas denitration refers to reducing the generated NOX to N2, thereby removing NOX in the flue gas. According to the treatment process, it can be divided into wet denitration and dry denitration.

[0003] During the flue gas denitration process, in order to control the amount of ammonia injected as raw material, prevent excessive ammonia from reacting with ammonia to generate solid substances and block the air preheater or optical window at the rear end, it is necessary to monitor the concentration of escaped ammonia in the flue gas pipeline at the outlet of the denitration device.

[0004] During monitoring, a laser spectroscopy ammonia escape analyzer is mostly used for monitoring. That is, a laser diode at the measurement end emits specific monochromatic light, avoiding the cross-interference of the absorption spectra of different gases. The temperature of the laser diode changes with the increase of its own working current or the change of the ambient temperature, causing its wavelength output to change. Through the scanning of the laser diode temperature controller, a laser spectrum consistent with the gas absorption spectrum is obtained. Through the processing of the measured data, the concentration of escaped ammonia can be calculated.

[0005] However, in the existing monitoring process, because the flue gas contains dust, the dust causes scattering, diffusion and absorption effects on the near-infrared laser. When the emitted laser reaches the receiving component, the intensity of the light is almost attenuated to zero, and then the phenomenon of not being able to monitor the accurate value of ammonia escape occurs, seriously affecting the monitoring accuracy. Therefore, a denitration flue gas monitoring system is proposed to solve the above-mentioned problems. Summary of the Utility Model

[0006] Based on the above description, the utility model provides a denitration flue gas monitoring system to solve the problem that dust affects the accuracy of monitoring results.

[0007] The technical solution of the utility model to solve the above technical problems is as follows: a denitration flue gas monitoring system, including: a first housing, the first housing includes an intake pipe and an outer pipe, a second housing is arranged at the top of the first housing by screws, a measurement end is arranged inside the second housing, an installation cylinder is arranged between the first housing and the second housing, a dust-proof cylinder is arranged inside the installation cylinder, and includes a dust-proof side rod, a stress block is arranged inside the dust-proof cylinder and extends into the installation cylinder, and a buffer spring is arranged between the stress block and the installation cylinder.

[0008] On the basis of the above technical solution, the utility model can also be improved as follows.

[0009] Further, the first housing includes an intake duct, an outer pipe is provided on the outer surface of the intake duct, an ash outlet is provided on the outer surface of the outer pipe, and a plugging block is provided inside the ash outlet.

[0010] Further, a first connection plate is provided at the top end of the outer pipe, and a first card slot is provided on the upper surface of the first connection plate.

[0011] Further, the second housing includes a second connection plate, a second card slot is provided on the lower surface of the second connection plate, and the second card slot corresponds to the first card slot one by one.

[0012] Further, a main pipe and a connecting pipe are sequentially provided on the upper surface of the second connection plate from bottom to top, and the main pipe and the connecting pipe are in communication with each other.

[0013] Further, the installation cylinder includes a semi-cylinder body, a fixing rod is provided on the outer surface of the semi-cylinder body, and the fixing rod is provided between the second card slot and the first card slot.

[0014] Further, a movable groove and a fixing groove are provided on opposite sides of the semi-cylinder body, and the fixing groove and the movable groove are in communication with each other.

[0015] Further, the ash baffle cylinder includes a main cylinder body, ash baffle side rods are provided on both inner surfaces of the main cylinder body, a hollow T-shaped block is provided on the upper surface of the main cylinder body, and the hollow T-shaped block extends into the fixing groove.

[0016] Further, the stress block includes a conical block, a T-shaped vertical rod is provided at the top end of the conical block, and the T-shaped vertical rod is provided inside the movable groove.

[0017] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0018] 1. By setting components such as the first housing, the stress block, and the ash baffle cylinder, through the cooperation between the intake duct and the stress block, the air entering from the intake duct collides with the stress block, and the air flow direction changes after the collision. During the collision, dust is separated from the air flow. When the air flow direction changes and moves along the direction of the ash baffle cylinder, the air flow and dust are further separated, thereby ensuring that the air in contact with the measurement end has sufficiently little dust;

[0019] 2. By setting the stress block and the buffer spring, the buffering effect is achieved. When the air flow passes through the intake duct and collides with the stress block, the buffer spring is compressed by the force to perform buffering, avoiding damage to the stress block caused by a suddenly increased air flow, so as to achieve the effect of extending the service life of the stress block. Description of the Drawings

[0020] Figure 1 Schematic structural diagram of a denitrification flue gas monitoring system provided by an embodiment of the present utility model;

[0021] Figure 2 For Figure 1 explosion structural diagram;

[0022] Figure 3 For Figure 2 schematic structural diagram of another perspective;

[0023] Figure 4 Schematic structural diagram of the first housing in an embodiment of the present utility model;

[0024] Figure 5 Schematic structural diagram of the second housing in an embodiment of the present utility model;

[0025] Figure 6 Schematic structural diagram of the installation cylinder in an embodiment of the present utility model;

[0026] Figure 7 Schematic structural diagram of the ash baffle cylinder in an embodiment of the present utility model;

[0027] Figure 8 Schematic structural diagram of the force-bearing block in an embodiment of the present utility model;

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1. First housing; 11. Intake pipeline; 12. Outer pipe; 13. Ash outlet; 14. First connection plate; 15. First card slot; 2. Second housing; 21. Second connection plate; 22. Second card slot; 23. Main pipeline; 24. Connecting pipe; 3. Measuring end; 4. Sealing block; 5. Installation cylinder; 51. Half cylinder body; 52. Fixed groove; 53. Movable groove; 54. Fixed rod; 6. Ash baffle cylinder; 61. Main cylinder body; 62. Ash baffle side rod; 63. Hollow T-shaped block; 7. Force-bearing block; 71. Cone block; 72. T-shaped vertical rod; 8. Buffer spring. Detailed implementation manners

[0030] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the description of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0032] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising", "including" or "having" and the like specify the presence of the stated features, integers, steps, operations, components, parts or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts or combinations thereof.

[0033] Please refer to Figures 2 - 5 , a denitrification flue gas monitoring system, comprising:

[0034] A first housing 1, which includes an intake duct 11 and an outer tube 12. The first housing 1 includes the intake duct 11. An outer tube 12 is provided on the outer surface of the intake duct 11. An ash discharge port 13 is provided on the outer surface of the outer tube 12. A plugging block 4 is provided inside the ash discharge port 13. A first connection plate 14 is provided at the top of the outer tube 12. A first card slot 15 is provided on the upper surface of the first connection plate 14;

[0035] A second housing 2, which is provided at the top of the first housing 1 by screws. The second housing 2 includes a second connection plate 21. A second card slot 22 is provided on the lower surface of the second connection plate 21. The second card slot 22 corresponds to the first card slot 15 one by one. A main pipe 23 and a connecting pipe 24 are provided on the upper surface of the second connection plate 21 in sequence from bottom to top. The main pipe 23 and the connecting pipe 24 are in communication with each other;

[0036] Based on the above, the first housing 1 and the second housing 2 are connected to each other by screws and nuts. After connection, the two housings are in communication with each other. The setting of the intake duct 11 makes the air flow direction fixed, that is, it ensures that the incoming air flow can collide with the force-receiving block 7, and the air flow after collision needs to move along the direction of the dust-blocking cylinder 6 and then enter the inside of the second housing 2. The first card slot 15 and the second card slot 22 cooperate with each other, so that the mounting cylinder 5 can be fixed between the two housings after the two housings are connected to each other.

[0037] Such as Figure 2 , Figure 3 and Figure 6 shown, a measuring end 3, which is provided inside the second housing 2;

[0038] A mounting cylinder 5, which is provided between the first housing 1 and the second housing 2. The mounting cylinder 5 includes a semi-cylindrical body 51. A fixing rod 54 is provided on the outer surface of the semi-cylindrical body 51. The fixing rod 54 is provided between the second card slot 22 and the first card slot 15. An activity slot 53 and a fixing slot 52 are provided on opposite sides of the semi-cylindrical body 51. The fixing slot 52 and the activity slot 53 are in communication with each other;

[0039] Based on the above, the installation cylinder 5 is fixed between the first housing 1 and the second housing 2. The setting of the fixing groove 52 plays a role in fixing the dust blocking cylinder 6, while the moving groove 53 provides a moving space for the force receiving block 7 to ensure that the force receiving block 7 can move vertically to compress the buffer spring 8.

[0040] As Figure 2 , Figure 3 , Figure 7 and Figure 8 shown, the dust blocking cylinder 6 is arranged inside the installation cylinder 5 and includes a dust blocking side rod 62. The dust blocking cylinder 6 includes a main cylinder body 61. The dust blocking side rods 62 are arranged on both inner surfaces of the main cylinder body 61. A hollow T-shaped block 63 is arranged on the upper surface of the main cylinder body 61, and the hollow T-shaped block 63 extends into the fixing groove 52.

[0041] The force receiving block 7 is arranged inside the dust blocking cylinder 6 and extends into the installation cylinder 5. The force receiving block 7 includes a conical block 71, and a T-shaped vertical rod 72 is arranged at the top of the conical block 71. The T-shaped vertical rod 72 is arranged inside the moving groove 53.

[0042] The buffer spring 8 is arranged between the force receiving block 7 and the installation cylinder 5.

[0043] Based on the above, the setting of the hollow T-shaped block 63 enables the dust blocking cylinder 6 to be connected to the installation cylinder 5. At this time, the dust blocking cylinder 6 plays a role in changing the air flow direction. At this time, the air flow moves downward along the direction of the dust blocking cylinder 6. During this process, the air flow contacts the dust blocking side rod 62. The setting of the dust blocking side rod 62 enables the air to flow normally, but the dust in the air is blocked and gradually accumulates, and the dust accumulates with each other to form larger dust particles. Then, under the action of gravity, it accumulates inside the first housing 1. The setting of the force receiving block 7 plays a role in blocking the air flow. When the air flow collides with the force receiving block 7, not only does the air flow direction change, but also the movement of the dust particles is blocked after the collision, and they accumulate with each other to form larger dust particles, thus achieving the effect of separating air from dust.

[0044] When this embodiment is actually used, the air flow enters the inside of the outer tube 12 from the intake pipe 11. During this process, the air flow collides with the force receiving block 7. During the collision, the force receiving block 7 moves upward under the force, and at this time, the buffer spring 8 is compressed under the force to play a buffering role, avoiding the situation that the force receiving block 7 is suddenly damaged by a large external force.

[0045] During the process of the airflow colliding with the force-bearing block 7, the direction of the airflow is along the outer surface of the conical block 71. Firstly, the flow direction is changed. Secondly, during the impact between the airflow and the force-bearing block 7, the movement of dust is blocked, and the dust comes into contact with each other to form larger dust particles. After the larger dust particles enter the inner part of the outer tube 12, they stay inside the outer tube 12 under the action of gravity, thereby achieving the effect of removing dust from the airflow.

[0046] After the airflow direction is changed, it flows downward along the inner wall of the dust baffle cylinder 6. During this process, the dust baffle side rod 62 plays a role in separating dust and airflow. When the airflow passes through the dust baffle side rod 62, the dust is blocked, and the dust comes into contact with each other to form larger dust particles, and then stays inside the outer tube 12.

[0047] This system separates the dust in the airflow by setting the force-bearing block 7 and the dust baffle cylinder 6, reducing the dust content when the airflow flows to the measurement end, thereby avoiding the influence on the measurement accuracy and ensuring sufficient accuracy of the measurement.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A denitrification flue gas monitoring system, characterized in that: include: A first housing (1) comprising an air intake duct (11) and an outer tube (12); A second housing (2) which is arranged on the top of the first housing (1) by means of screws; A measuring end (3) disposed inside the second housing (2); A mounting cylinder (5) disposed between the first shell (1) and the second shell (2); An ash blocking cylinder (6) is arranged inside the installation cylinder (5) and comprises an ash blocking side rod (62); A force bearing block (7) is arranged inside the dust retaining cylinder (6) and extends to the inside of the installation cylinder (5); A buffer spring (8) is arranged between the force-bearing block (7) and the mounting tube (5).

2. The denitrification flue gas monitoring system according to claim 1, characterized in that: The first shell (1) comprises an air intake duct (11), an outer tube (12) is arranged on the outer surface of the air intake duct (11), an ash outlet (13) is arranged on the outer surface of the outer tube (12), and a blocking block (4) is arranged inside the ash outlet (13).

3. The denitrification flue gas monitoring system according to claim 2, characterized in that: A first connection disk (14) is provided at the top end of the outer tube (12), and a first clamping groove (15) is provided on the upper surface of the first connection disk (14).

4. The denitrification flue gas monitoring system according to claim 3, characterized in that: The second housing (2) comprises a second connection disk (21), the lower surface of the second connection disk (21) is provided with a second card slot (22), and the second card slot (22) corresponds one-to-one to the first card slot (15).

5. The denitrification flue gas monitoring system according to claim 4, characterized in that: The upper surface of the second connection plate (21) is provided with a main pipeline (23) and a connecting pipe (24) in sequence from bottom to top, and the main pipeline (23) and the connecting pipe (24) are connected to each other.

6. The denitrification flue gas monitoring system according to claim 4, characterized in that: The mounting cylinder (5) comprises a semi-cylinder (51), the outer surface of the semi-cylinder (51) is provided with a fixing rod (54), and the fixing rod (54) is arranged between the second clamping groove (22) and the first clamping groove (15).

7. The denitrification flue gas monitoring system according to claim 6, characterized in that: A movable groove (53) and a fixed groove (52) are provided on opposite sides of the semi-cylinder (51), and the fixed groove (52) and the movable groove (53) are communicated with each other.

8. The denitrification flue gas monitoring system according to claim 7, characterized in that: The ash blocking cylinder (6) comprises a main cylinder body (61), both inner surfaces of which are provided with ash blocking side rods (62), and the upper surface of the main cylinder body (61) is provided with a hollow T-shaped block (63), and the hollow T-shaped block (63) extends to the interior of the fixing groove (52).

9. The denitrification flue gas monitoring system according to claim 7, characterized in that: The force-bearing block (7) comprises a conical block (71), a T-shaped vertical rod (72) is arranged at the top end of the conical block (71), and the T-shaped vertical rod (72) is arranged inside the movable groove (53).

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