CN217093896U - A double flue structure of an electrostatic precipitator that can adjust the flue gas volume online - Google Patents

Abstract

The utility model relates to an electrostatic precipitator technical field, concretely relates to but two flue structures of electrostatic precipitator of online adjustment amount of smoke. The method comprises the following steps: the outlet of the total air inlet pipe is branched to form two branch pipelines; the two flowmeters are respectively arranged at the outlet ends of the two branch pipelines, and are suitable for detecting the smoke gas volume passing through the corresponding branch pipelines; the adjusting guide plate is rotatably arranged at the joint of the two branch pipelines and is suitable for distributing the smoke volume entering the two branch pipelines through rotation; the first driving structure is suitable for driving the adjusting guide plate to rotate; and the controller is connected with the first driving structure and the two flowmeters and is suitable for controlling the first driving structure to act according to flow signals fed back by the two flowmeters so as to enable the smoke gas volume passing through the two branch pipelines to be equal. The structure can adjust the uniformity of the smoke amount on line, can be remotely operated, avoids the on-site observation and recording work of operators, and lightens the working strength of construction and debugging personnel.

Description

A double flue structure of an electrostatic precipitator that can adjust the flue gas volume online

technical field

The utility model relates to the technical field of electric precipitators, in particular to a double flue structure of an electric precipitator that can adjust the amount of flue gas online.

Background technique

As an important environmental protection equipment in coal-fired power plants, electrostatic precipitators are widely used in coal-fired power plants. The flue gas volume of the electrostatic precipitator has an important influence on its dust removal efficiency and outlet smoke concentration.

At present, coal-fired power plants with an installed capacity of more than 300MW generally need to be equipped with two electrostatic precipitators. Each electrostatic precipitator is generally divided into two chambers, and dual flue pipes need to be connected at the entrance of the electrostatic precipitator. Double flue pipes are generally formed by a main pipe branch, and the formed two branch pipes are connected to two electrostatic precipitators respectively. Due to the influence of space layout or design, branch pipes generally have flue bends, and flue bends will cause entry into The airflow distribution of the two electrostatic precipitators is uneven, which affects the dust removal efficiency and the outlet smoke concentration.

Utility model content

Therefore, the technical problem to be solved by the present invention is to overcome the defect of uneven air intake of the double flue structure of the electrostatic precipitator in the prior art, so as to provide a double flue structure of the electrostatic precipitator that can adjust the flue gas volume online.

The double flue structure of the electrostatic precipitator, which can adjust the flue gas volume online, provided by the utility model includes:

The main intake pipe is branched at the outlet to form two branch pipes;

two flow meters, respectively installed at the outlet ends of the two branch pipes, and the flow meters are suitable for detecting the amount of flue gas passing through the corresponding branch pipes;

an adjusting deflector, which is rotatably installed at the junction of the two branch pipes, and is suitable for distributing the amount of flue gas entering the two branch pipes through rotation;

a first driving structure, adapted to drive the adjustment baffle to rotate;

A controller, connected to the first driving structure and the two flow meters, is adapted to control the action of the first driving structure according to the flow signals fed back by the two flow meters to make the flue gas passing through the two branch pipes equal amounts.

Optionally, it also includes flow-equalizing mechanisms respectively disposed in the two branch pipes, and the flow-equalizing mechanisms include:

a first perforated plate, fixed in the branch pipe and perpendicular to the axis of the branch pipe;

a second perforated plate, arranged in parallel with and adjacent to the first perforated plate, the second perforated plate can slide along the cross-sectional direction of the branch pipe;

a second driving structure, adapted to drive the second perforated plate to slide, the second driving structure is connected with the controller;

The controller is adapted to control the action of the first driving structure according to the flow signals fed back by the two flow meters, and then control the action of the second driving structure.

Optionally, the opening diameter of the first porous plate and the second porous plate is 250 mm, and the opening ratio is 0.9.

Optionally, the second driving structure is a poppet valve.

Optionally, the two flow meters are respectively installed in the environmental protection test holes reserved in the two branch pipes.

Optionally, the flowmeter is a matrix flowmeter.

The technical scheme of the utility model has the following advantages:

1. The double flue structure of the electrostatic precipitator that can adjust the amount of flue gas on-line provided by the present utility model is provided with an adjustment guide plate, and the adjustment guide plate is arranged at the junction of the two branch pipes, and the adjustment guide plate is equipped with a The first driving structure, the first driving structure is equipped with a controller, and a flow meter is provided at the outlet end of the two branch pipes, the flue gas volume of the branch pipe is monitored by the flow meter, and the controller feedbacks according to the two flow meters The flow signal of the two branch pipes judges whether the flue gas volume of the two branch pipes is uniform, and then adaptively controls the action of the first driving structure to drive the adjustment deflector to rotate towards the branch pipe with the larger flue gas volume, so as to realize the total flue gas volume. average distribution. The device can adjust the uniformity of the flue gas volume online, and can be operated remotely, avoiding the on-site observation and recording work of the operators, and reducing the work intensity of the construction and debugging personnel.

2. The double flue structure of the electrostatic precipitator that can adjust the amount of flue gas on-line provided by the present utility model is also provided with an equalizing mechanism, and the equalizing mechanism includes a first porous plate, a second porous plate and a second driving structure, The second perforated plate can be lifted under the action of the second driving structure to realize the adjustment of the overlapping area with the first perforated plate, thereby realizing the adjustment of the passing flue gas volume. After the adjustment of the deflector is completed, the flue gas volume can be further fine-tuned through the flow equalization mechanism, so as to complete the distribution of the flue gas volume more uniformly.

3. The double flue structure of the electrostatic precipitator that can adjust the amount of flue gas online provided by the utility model, the aperture diameter of the perforated plate is 250mm, and the aperture ratio is 0.9, which can finely adjust and balance the smoke in the two branch channels. air volume.

4. The double flue structure of the electrostatic precipitator that can adjust the flue gas volume online provided by the utility model, the flow meter is installed in the environmental protection test hole reserved in the branch pipe, and there is no need to set up a separate installation point, and it can be removed when not in use, preventing wear.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the specific embodiments or the prior art. Obviously, the following descriptions The accompanying drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 is the schematic diagram of the double flue structure of the electrostatic precipitator in the embodiment of the utility model;

Fig. 2 is the structural representation of the porous plate in the embodiment of the present utility model;

3 is a schematic diagram of the adjustment state of the two-layer perforated plate in the embodiment of the present invention.

Description of reference numbers:

1. Main intake pipe; 2. Branch pipes; 3. Flow meter; 4. Adjustment guide plate; 5. Flow equalization mechanism;

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.

Example 1

1, the present embodiment provides a dual flue structure of an electrostatic precipitator that can adjust the amount of flue gas online, including:

The main intake pipe 1 is branched at the outlet to form two branch pipes 2, that is, the branch pipes 2 are located downstream of the main intake pipe 1 along the airflow direction;

Two flow meters 3 are respectively installed at the outlet ends of the two branch pipes 2, and the flow meters 3 are suitable for detecting the amount of flue gas passing through the corresponding branch pipes 2;

Adjusting the deflector 4, it is rotatably installed at the junction of the two branch pipes 2, and is suitable for distributing the amount of flue gas entering the two branch pipes 2 through rotation;

The first driving structure is suitable for driving the adjustment baffle 4 to rotate;

The controller, connected with the first driving structure and the two flowmeters 3 , is adapted to control the action of the first driving structure according to the flow signals fed back by the two flowmeters 3 to make the amount of flue gas passing through the two branch pipes 2 equal.

The double flue structure of the electrostatic precipitator in this embodiment can adjust the uniformity of the flue gas volume online, and can be operated remotely, avoiding the on-site observation and recording work of the operators, and reducing the work intensity of the construction and debugging personnel. In addition, when the operating conditions of coal-fired power plants change and the total flue gas volume changes, the flue gas volume can be adjusted in real time according to the operating conditions, so as to precisely distribute and adjust the flue gas volume.

As shown in FIG. 1 , in this embodiment, one of the two branch pipes 2 is a curved pipe and the other is a straight pipe, and the outlet ends of the two branch pipes 2 are respectively connected to the two electrostatic precipitators. As an alternative embodiment, the two branch pipes 2 can also both be bent pipes, or both can be straight pipes.

In this embodiment, the flowmeter 3 is a matrix flowmeter 3 . As an alternative solution, the flow meter 3 can also be a flow meter 3 that is used to detect the amount of gas, such as a Verabar flowmeter 3, a vortex flowmeter 3, or the like.

In this embodiment, a rotating shaft is installed at the junction of the two branch pipes 2, and the adjusting guide plate 4 is fixed on the rotating shaft to realize its rotation installation. The first driving structure only needs to drive the rotating shaft to rotate the adjusting guide plate. 4 rotations. As an alternative solution, a mounting shaft can be integrally extended from both ends of the adjusting baffle 4 , and the mounting shaft can be rotated and installed at the junction of the two branch pipes 2 , so as to realize the rotating installation of the adjusting baffle 4 .

Specifically, the first driving structure may adopt a common rotary driving structure such as a motor and a rotary cylinder.

In this embodiment, the two flow meters 3 are respectively installed in the environmental protection test holes reserved by the two branch pipes 2 , and there is no need to set up separate installation points, and can be removed when not in use to prevent wear. As an alternative solution, a separate installation hole can also be provided on the branch pipe 2, and the flowmeter 3 can be installed in the installation hole.

As an improved embodiment, the double flue structure of the electrostatic precipitator further includes a flow equalization mechanism 5 respectively disposed in the two branch pipes 2, and the flow equalization mechanism 5 includes:

The first perforated plate 51 is fixed in the branch pipe 2 and is perpendicular to the axis of the branch pipe 2;

The second perforated plate 52 is arranged parallel to and adjacent to the first perforated plate 51, and the second perforated plate 52 can slide along the cross-sectional direction of the branch pipe 2;

The second driving structure is suitable for driving the second porous plate 52 to slide, and the second driving structure is connected with the controller;

The controller is adapted to control the action of the first driving structure according to the flow signals fed back by the two flow meters 3 and then control the action of the second driving structure.

In this improved embodiment, after the adjustment of the deflector 4 is completed, the amount of flue gas can be further fine-tuned by the flow equalizing mechanism 5, so as to complete the distribution of the amount of flue gas more uniformly.

Specifically, the opening diameter of the first porous plate 51 and the second porous plate 52 is 250 mm, and the opening ratio is 0.9. The pore size is small and the opening rate is high, which can finely adjust and balance the amount of flue gas in the two branch channels.

Specifically, the second driving structure is a poppet valve. As an alternative solution, the second driving structure may also adopt other linear driving mechanisms such as air cylinders, linear motors, etc., to drive the second perforated plate 52 to translate relative to the first perforated plate 51 .

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (6)

1. The utility model provides a but two flue structures of electrostatic precipitator of online adjustment flue gas volume which characterized in that includes:

the outlet of the total air inlet pipe (1) is branched to form two branch pipelines (2);

two flowmeters (3) respectively installed at outlet ends of the two branch pipes (2), wherein the flowmeters (3) are suitable for detecting the smoke gas amount passing through the corresponding branch pipes (2);

the adjusting guide plate (4) is rotatably arranged at the joint of the two branch pipelines (2) and is suitable for distributing the smoke gas volume entering the two branch pipelines (2) through rotation;

a first driving structure, suitable for driving the adjusting deflector (4) to rotate;

and the controller is connected with the first driving structure and the two flowmeters (3) and is suitable for controlling the first driving structure to act according to flow signals fed back by the two flowmeters (3) so as to enable the smoke gas amount passing through the two branch pipelines (2) to be equal.

2. The electric precipitator double-flue structure capable of adjusting the flue gas volume online according to claim 1, further comprising a flow equalizing mechanism (5) respectively arranged in the two branch pipes (2), wherein the flow equalizing mechanism (5) comprises:

a first perforated plate (51) fixed inside the branch pipe (2) and perpendicular to the axis of the branch pipe (2);

a second perforated plate (52) arranged parallel and adjacent to the first perforated plate (51), the second perforated plate (52) being slidable in the cross-sectional direction of the branch pipe (2);

a second driving structure, which is suitable for driving the second porous plate (52) to slide, and is connected with the controller;

the controller is suitable for controlling the first driving structure to act and then controlling the second driving structure to act according to flow signals fed back by the two flowmeters (3).

3. The electric precipitator double flue structure capable of adjusting the flue gas volume online according to claim 2, wherein the first perforated plate (51) and the second perforated plate (52) have an opening aperture of 250mm and an opening rate of 0.9.

4. The electric dust collector double-flue structure capable of adjusting the smoke volume on line according to claim 2, wherein the second driving structure is a lift valve.

5. The electric dust collector double-flue structure capable of adjusting the flue gas volume on line according to any one of claims 1 to 4, wherein two flow meters (3) are respectively installed in the environmental protection test holes reserved in the two branch pipelines (2).

6. The electric precipitator double flue structure capable of adjusting the flue gas volume online according to claim 5, wherein the flow meter (3) is a matrix flow meter (3).

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