CN217910915U - Electric dust remover - Google Patents

Abstract

The utility model belongs to industry dust collecting equipment field discloses an electrostatic precipitator, including storehouse pump, ash bucket and controller, the ash bucket is arranged in the top of storehouse pump, just the upper end of storehouse pump has ash falling port and return air inlet, the ash discharge mouth of ash bucket lower extreme with the ash falling port is connected and is linked together to it is equipped with the blanking valve to go out to communicate, vertical interval is equipped with two charge level indicators, two on the lateral wall of ash bucket the charge level indicator all with the controller electricity is connected, so can monitor the material level in the ash bucket by the charge level indicator, and wherein, the charge level indicator that is located the below is low charge level indicator, and the charge level indicator that is located the top is high charge level indicator, when high charge level indicator sensed material level signal, shows the risk that there is the fill in the ash bucket.

Description

Electric dust remover

Technical Field

The utility model belongs to the industrial dust removal equipment field especially relates to an electrostatic precipitator.

Background

The overflow bucket phenomenon can appear usually in present electrostatic precipitator's the ash bucket, and in case the full bucket in the electrostatic precipitator, probably cause the electrostatic precipitator electric field short circuit, the overflow bucket can cause the increase of electric precipitator ash bucket load in addition for a long time, lead to the electrostatic precipitator to exist the risk that collapses, the ash bucket lateral wall of the electrostatic precipitator of present power plant goes upward and only sets up the high material level that a charge level indicator responded to the coal dust in the ash bucket, but its mistake often appears, and can't detect the canopy ash phenomenon, when this charge level indicator breaks down in addition, the unable steady operation of equipment.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a simple structure, and can carry out the electrostatic precipitator monitored to the material level in the ash bucket.

In order to achieve the above purpose, the technical solution of the present invention is as follows: the utility model provides an electric dust remover, includes storehouse pump, ash bucket and controller, the ash bucket is arranged in the top of storehouse pump, just the upper end of storehouse pump has ash hole and return air inlet that fall, the ash discharge mouth of ash bucket lower extreme with the ash hole that falls is connected and is linked together to be equipped with the blanking valve at the intercommunication play, vertical interval is equipped with two charge level indicators, two on the lateral wall of ash bucket the charge level indicator all with the controller electricity is connected.

The beneficial effects of the above technical scheme are that: so can monitor the material level in the ash bucket by the charge level indicator, wherein, the charge level indicator that is located the below is low charge level indicator, and the charge level indicator that is located the top is high charge level indicator, and when high charge level indicator sensed the material level signal, the risk that has the excessive fill in the expression ash bucket has detected signal at high charge level indicator in addition, and when low charge level indicator did not detect the signal, can affirm the grey phenomenon of canopy appears in the ash bucket.

In the technical scheme, the material level meter is an ultrasonic material level meter or a radar material level meter.

The beneficial effects of the above technical scheme are that: the measurement sensitivity is high.

Still include the return air duct among the above-mentioned technical scheme, the vertical setting of return air duct, the lower extreme of return air duct with the return air inlet intercommunication, just the upper end of return air duct upwards extends to and penetrates in the ash bucket, just the level of the upper end of return air duct is higher than two the height of charge level indicator, just be equipped with return air valve and wind speed measuring device on the return air duct, wind speed measuring device with the controller electricity is connected.

The beneficial effects of the above technical scheme are that: so can be assisted by wind speed measuring device and come the material level in the ash bucket to carry out the early warning, when return air valve and blanking valve are opened simultaneously, the wind speed value that wind speed measuring device surveyed is less than the threshold value, then indicate that the upper end of return air pipe is buried by the dust in the ash bucket, the ash bucket has the risk of overflowing the fill this moment, and when return air valve and blanking valve were opened simultaneously, the wind speed value that wind speed measuring device surveyed reaches the threshold value, then indicate equipment normal operating, when return air valve and blanking valve were closed simultaneously, wind speed measuring device surveyed the wind speed value and reached the threshold value, then can confirm that return air valve exists the leakage, and when return air valve and blanking valve were opened simultaneously, wind speed measuring device surveyed the wind speed value and did not reach the threshold value, and when two charge level meters all had no sensing signal, then judge that the ash phenomenon appears in the ash bucket top.

In the technical scheme, the height difference between the horizontal height of the upper end of the air return pipe and the height of the material level meter above the air return pipe is 5-10cm.

The beneficial effects of the above technical scheme are that: therefore, the safety of the electric dust collector is higher.

In the technical scheme, a flashboard door is further arranged at the ash discharge port.

The beneficial effects of the above technical scheme are that: in this way, the ash discharge opening can be closed through the shutter door in an emergency.

In the technical scheme, the flashboard door is an electric flashboard door.

The beneficial effects of the above technical scheme are that: the device has simple structure and high automation degree.

Still include the alarm among the above-mentioned technical scheme, the alarm with the controller electricity is connected.

The beneficial effects of the above technical scheme are that: therefore, the alarm can give out an alarm when the material level in the ash hopper is high.

In the technical scheme, the alarm is an audible and visual alarm.

The beneficial effects of the above technical scheme are that: the alarm signal is easy to be obtained by people.

In the technical scheme, the controller is a PLC controller.

The beneficial effects of the above technical scheme are that: the control precision is high.

In the technical scheme, the controller is also electrically connected with an indoor upper computer on duty.

The beneficial effects of the above technical scheme are that: therefore, when the material level in the ash hopper is high, the controller sends a signal to the upper computer so as to enable a worker in the duty room to perform corresponding treatment.

Drawings

FIG. 1 is a schematic view of an electric dust collector according to an embodiment of the present invention;

FIG. 2 is one of the electrical connection diagrams of the electric dust collector according to the embodiment of the present invention;

fig. 3 is a second electrical connection diagram of the electric dust collector according to the embodiment of the present invention.

In the figure: 1 bin pump, 11 ash falling ports, 12 air return ports, 2 ash buckets, 21 ash discharge ports, 22 gate gates, 3 blanking valves, 4 charge level indicators, 5 air return pipes, 51 air return valves, 52 air speed measuring devices, 6 alarms, 7 upper computers and 8 controllers.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1 and 2, this embodiment provides an electrostatic precipitator, including cabin pump 1, ash bucket 2 and controller 8, ash bucket 2 is arranged in the top of cabin pump 1, just the upper end of cabin pump 1 has ash drop port 11 and return air inlet 12, ash discharge port 21 of ash bucket 2 lower extreme with ash drop port 11 connects and feeds through to be equipped with blanking valve 3 in the intercommunication play, vertical interval is equipped with two charge level meters 4, two on the lateral wall of ash bucket 2 the charge level meter 4 all with controller 8 electricity is connected, so can monitor the charge level in the ash bucket by the charge level meter, wherein, the charge level meter that is located the below is low charge level meter, and the charge level meter that is located the top is high charge level meter, works as when high charge level meter senses the charge level signal, shows the risk that there is the fill in the ash bucket in addition high charge level meter has detected signal, and when low charge level meter does not detected signal, can be affirmed ash phenomenon appears in the ash bucket, among the above-mentioned technical scheme charge level meter 4 is ultrasonic wave sheds or reaches the sensitivity of charge level meter, its measurement.

Wherein, this electrostatic precipitator is applicable to thermal power plant, wherein, the ash bucket is used for receiving and stores the fly ash that electrostatic precipitator electric field was collected, and the fly ash that stores up in the ash bucket carries through storehouse pump under the ash bucket, and electrostatic precipitator probably receives influences such as coal quality, coal measure and ash in daily operation in addition, can not in time carry the fly ash that electrostatic precipitator collected completely extremely the storehouse pump, this also can cause the accumulation of fly ash in the ash bucket to along with the lapse of time, store up fly ash in the ash bucket and reach the height of low charge level indicator and high charge level indicator gradually, and when the charge level reaches during the height of high charge level indicator, high charge level indicator sends signal to the controller this moment to corresponding processing is made, and when high charge level indicator breaks down, still can take place the phenomenon of diffuse fill this moment, if the phenomenon of the ash appears in the ash bucket in addition, the bottom is empty in the ash bucket this moment, and low charge level indicator and/or high charge level indicator do not produce induction signal this moment, and the coal ash at top gathers more in the ash bucket, also can take place the phenomenon of diffuse fill. In order to overcome this technical defect, the electrostatic precipitator that this embodiment provided still includes return air duct 5, the vertical setting of return air duct 5, the lower extreme of return air duct 5 with return air inlet 12 intercommunication, just the upper end of return air duct 5 upwards extends to penetrating in the ash bucket 2, just the level of the upper end of return air duct 5 is higher than two the height of charge level indicator 4, just be equipped with return air valve 51 and wind speed measuring device 52 on return air duct 5, wind speed measuring device 52 with controller 8 electricity is connected, so when high charge level indicator had the trouble, can be by wind speed measuring device as supplementary carrying out the early warning to the charge level in the ash bucket, when the return air valve and the blanking valve are opened simultaneously, the air speed value measured by the air speed measuring device is lower than a threshold value (the threshold value is set according to the air speed value when the upper end of the return air pipe is normally buried by the pulverized coal ash, the condition that the top end of the return air pipe is not blocked when the air speed value in the return air pipe exceeds the threshold value and the condition that the top end part of the return air pipe is blocked or completely blocked when the air speed value in the return air pipe is lower than the threshold value indicates that the upper end of the return air pipe is buried by the dust in the dust hopper, and the risk of overflowing the dust hopper exists in the dust hopper at the moment); when the return air valve and the blanking valve are closed simultaneously (no matter whether the two charge level meters are in failure or not), the air speed value measured by the air speed measuring device reaches a threshold value, and then the return air valve is determined to have leakage; when the return air valve and the blanking valve are opened simultaneously, the wind speed value measured by the wind speed measuring device does not reach the threshold value, and when the two level meters have no induction signals (the two level meters do not break down), the ceiling ash phenomenon at the top of the ash hopper is judged (certainly, if the low level meter has no signal, and the high level meter has a signal, then the ceiling ash phenomenon is shown at the bottom of the ash pile in the ash hopper, and when the low level meter has a signal, and when the high level meter has a signal, then the ceiling ash phenomenon is shown at the middle of the ash pile in the ash hopper), at present, a tamping rod is usually adopted manually to blast the coal ash in the ash hopper to fall to the inner bottom of the ash hopper above the ash hopper, of course, a vibration motor can also be arranged at the upper end of the outer side wall of the ash hopper, and the vibration motor is also electrically connected with the controller, at this time, if the controller monitors the ceiling ash phenomenon in the ash hopper, the vibration motor can be started to run, and the vibration motor drives the ash hopper to vibrate, so that the coal ash gathered at the inner upper end of the ash hopper falls to the inner bottom of the ash hopper.

The wind speed measuring device is the prior art and can be similar to the measuring device disclosed in CN105403728B measuring device and method for measuring the flow speed of the dust-containing gas.

In the technical scheme, the height difference between the horizontal height of the upper end of the air return pipe 5 and the height difference between the upper end of the air return pipe and the level indicator 4 above the air return pipe is 5-10cm, so that the electric dust collector is higher in safety. Of course, the distance between the upper end of the air return pipe and the top end of the ash bucket is at least 5cm, and the distance between the high material level meter and the top end of the ash bucket is preferably 10-30 cm. The vertical height difference between the two level meters is preferably not less than 0.3m, the vertical height difference between the two level meters is preferably 0.5m, and the vertical distance between the low level meter and the lower end of the ash bucket is preferably 0.2-0.5m.

In the above technical solution, the ash discharge port 21 is further provided with a gate plate door 22 (which belongs to the prior art and is not described herein), so that the ash discharge port can be closed through the gate plate door in an emergency, the gate plate door keeps a normally open state during normal operation, and the connection or disconnection of the ash discharge port of the ash bucket and the bin pump is mainly controlled by the blanking valve, wherein the blanking valve can adopt a pneumatic valve or an electric valve, and when the blanking valve fails and is in an open state, the connection or disconnection of the ash discharge port of the ash bucket can be controlled by the gate plate door.

In the above technical solution, the shutter door 22 is an electric shutter door, and has a simple structure and high automation degree.

Still include alarm 6 among the above-mentioned technical scheme, alarm 6 with 8 electricity of controller are connected, so can send the police dispatch newspaper by the alarm when the material level is high in the ash bucket, but this alarm direct mount ash bucket on the lateral wall (install near spacious and obvious position department best), and treat that the buggy ash in the ash bucket resumes normal collection back, the controller control alarm stops the warning this moment, can avoid like this that the people for maloperation leads to the alarm to stop reporting to the police.

In the technical scheme, the alarm 6 is an audible and visual alarm, and an alarm signal of the audible and visual alarm is easy to acquire by people.

In the above technical solution, the controller 8 is a PLC controller, and the control precision is high.

In the technical scheme, the controller 8 is also electrically connected with the upper computer 7 in the duty room, so that the controller can send a signal to the upper computer when the material level in the ash hopper is high, and corresponding treatment is carried out by a worker in the duty room. Wherein, the host computer can be the computer.

Of course, as shown in fig. 3, the blanking valve, the return air valve (the return air valve can also adopt an electric valve) and the bin pump are all connected with the controller electrically, so that the automation degree of the whole electric dust remover can be improved, namely, an operator in a duty room can control the controller through the upper computer and control the blanking valve and the return air valve to be opened or closed.

The controller can be arranged in a control cabinet of a factory building.

It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Also, when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

For ease of description, spatially relative terms, such as "over", "above", "on", "upper surface", "over", and the like, may be used herein to describe one element or feature's spatial relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above" may include both an orientation of "above" and "below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the present invention can be smoothly implemented by those skilled in the art according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides an electric precipitator, its characterized in that, includes storehouse pump (1), ash bucket (2) and controller (8), ash bucket (2) are arranged in the top of storehouse pump (1), just the upper end of storehouse pump (1) has ash falling port (11) and return air inlet (12), ash discharging port (21) of ash bucket (2) lower extreme with ash falling port (11) are connected and are linked together to be equipped with blanking valve (3) at the intercommunication play, vertical interval is equipped with two charge level indicators (4), two on the lateral wall of ash bucket (2) charge level indicator (4) all with controller (8) electricity is connected.

2. An electric precipitator according to claim 1, characterized in that the level gauge (4) is an ultrasonic level gauge or a radar level gauge.

3. The electric dust collector of claim 1, further comprising a return air pipe (5), wherein the return air pipe (5) is vertically arranged, the lower end of the return air pipe (5) is communicated with the return air inlet (12), the upper end of the return air pipe (5) upwards extends into the ash hopper (2), the horizontal height of the upper end of the return air pipe (5) is higher than two, the height of the charge level indicator (4) is larger than two, a return air valve (51) and an air speed measuring device (52) are arranged on the return air pipe (5), and the air speed measuring device (52) is electrically connected with the controller (8).

4. An electric precipitator according to claim 3, characterized in that the height difference between the level of the upper end of the return air duct (5) and the level gauge (4) above it is 5-10cm.

5. An electric dust collector as claimed in claim 1, characterized in that a shutter door (22) is further arranged at the dust discharge port (21).

6. An electric precipitator according to claim 5, characterised in that the shutter door (22) is an electric shutter door.

7. An electric precipitator according to any of claims 1-6, further comprising an alarm (6), wherein the alarm (6) is electrically connected to the controller (8).

8. An electric precipitator according to claim 7, characterised in that the alarm (6) is an audible and visual alarm.

9. An electric precipitator according to claim 7, characterised in that the controller (8) is a PLC controller.

10. An electric precipitator according to claim 7, characterised in that the controller (8) is also electrically connected to an upper computer (7) in the room on duty.

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