CN218865208U - Coal fired power plant ash bucket material level auxiliary device and monitoring system - Google Patents
Coal fired power plant ash bucket material level auxiliary device and monitoring system Download PDFInfo
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- CN218865208U CN218865208U CN202221991677.2U CN202221991677U CN218865208U CN 218865208 U CN218865208 U CN 218865208U CN 202221991677 U CN202221991677 U CN 202221991677U CN 218865208 U CN218865208 U CN 218865208U
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Abstract
The utility model discloses a coal-fired power plant ash bucket material level auxiliary device and a monitoring system, which comprises a device main body, wherein the device main body comprises an ash bucket and a negative pressure sampling tube, and the negative pressure sampling tube is arranged on one side of the ash bucket; the cleaning assembly is connected with the device main body and comprises a blowing component and a scraper component, and the scraper component is arranged on the inner wall of the ash bucket. The utility model discloses beneficial effect: the utility model discloses the setting cleans the subassembly, when the dust is piled up too much, through scraper blade part with sweep the part and cooperate, carries out quick spatula to ash bucket inner wall grime, can also sweep the accumulational dust in bottom simultaneously, guarantees electric precipitation and ash bucket safe operation. Simultaneously, when ash bucket charge level indicator normal operating, the device provides the auxiliary monitoring basis (negative pressure value height) for it, when the charge level indicator was out of order, through the change of the negative pressure value in the ash bucket, can also judge the ash grain condition of piling up in the ash bucket, guaranteed ash bucket normal operating.
Description
Technical Field
The utility model relates to a coal fired power plant equipment technical field, especially a coal fired power plant ash bucket material level auxiliary device and monitoring system.
Background
The ash bucket material level meter is used as an ash bucket material level real-time monitoring device, and plays a significant role in electric dust removal operation. The continuous level indicator used for the ash bucket of the coal-fired power plant mainly comprises a passive nuclear level indicator and a capacitance level indicator, and the two level indicators have defects in the using process. Firstly, the flying ash causes serious hanging material, and the false alarm phenomenon is often generated. Secondly, because the container is sealed, the actual condition of the material level can not be judged, and the parameters can not be accurately set. And most of few contact type material level switch products are only switching values, so that the material level change trend cannot be judged. In the past, people have been in a paralytic state when monitoring the material level meter, and the only monitoring means of the ash level of the ash bucket cannot play a role.
To sum up, design one kind to the charge level indicator and assist and clean and negative pressure monitoring devices, it is very necessary to electrostatic precipitator normal operating and prevent the occurence of failure.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.
The utility model discloses a problem that exists in the view of above-mentioned and/or current ash bucket material level has been proposed.
Therefore, one of the objects of the present invention is to provide a material level auxiliary device for ash bucket of coal-fired power plant, which can clean the inner wall of ash bucket when the ash bucket has more accumulated ash.
In order to solve the technical problem, the utility model provides a following technical scheme: the auxiliary device for the material level of the ash bucket of the coal-fired power plant comprises a device main body, a sampling device and a control device, wherein the device main body comprises the ash bucket and a negative pressure sampling tube; clean the subassembly, with the device bulk phase is connected, including sweeping the part and scraper blade part, scraper blade part sets up at the ash bucket inner wall.
As a coal fired power plant ash bucket material level auxiliary device's an preferred scheme, wherein: the negative pressure sampling tube upside is provided with the sample primary valve, and the other end is provided with the sample secondary valve, the sample secondary valve sets up in sample primary valve one side.
As a coal fired power plant ash bucket material level auxiliary device's an optimal selection scheme, wherein: the purging component comprises a compressed air purging pipeline and a compressed air purging valve, the compressed air purging pipeline is arranged on one side of the negative pressure sampling pipe, and the compressed air purging valve is arranged on the upper side of the compressed air purging pipeline.
As a coal fired power plant ash bucket material level auxiliary device's an optimal selection scheme, wherein: the scraper component comprises a scraper car and a moving track, wherein the scraper car is arranged on the upper side of the moving track and slides along the moving track.
As a coal fired power plant ash bucket material level auxiliary device's an optimal selection scheme, wherein: the motion track is arranged on the inner wall of the ash bucket, the motion track is arranged to be spiral, and two ends of the motion track are arranged on the upper side of the ash bucket.
As a coal fired power plant ash bucket material level auxiliary device's an optimal selection scheme, wherein: the ash bucket is characterized in that a stay wire motor is arranged on the upper side of the ash bucket, a stay wire roller is arranged at the front end of the stay wire motor, and the two stay wire motors are arranged oppositely.
As a coal fired power plant ash bucket material level auxiliary device's an optimal selection scheme, wherein: the front end of the scraper is provided with a scraper, the bottom of the scraper is provided with a roller, the rear side of the scraper is provided with a rolling shaft, and the rolling shaft is connected with a pull wire.
As a coal fired power plant ash bucket material level auxiliary device's an preferred scheme, wherein: and two ends of the stay wire are respectively connected to the stay wire roller at the front side of the stay wire motor.
And simultaneously, the utility model discloses another aim at provides a coal fired power plant ash bucket material level monitoring system, when electric precipitation ash bucket charge level indicator is out of alignment, utilizes the material level auxiliary monitoring of this system in to the ash bucket.
Concretely, a coal fired power plant ash bucket material level monitoring system includes: the monitoring assembly comprises a pressure valve component and a pressure measuring and setting pipe which are arranged on one side of the negative pressure sampling pipe.
As a coal fired power plant ash bucket material level monitoring system's an optimal selection scheme, wherein: the pressure valve part comprises an instrument sampling valve and a negative pressure monitoring instrument, one side of the negative pressure sampling tube is connected with a pressure measurement establishing tube, one side of the pressure measurement establishing tube is provided with the instrument sampling valve, and the end part of the pressure measurement establishing tube is provided with the negative pressure monitoring instrument.
The utility model has the advantages that: the utility model discloses the subassembly is cleaned in the setting, when the dust piles up too much, cooperatees through scraper blade part and the part that sweeps, carries out quick spatula to ash bucket inner wall grits, can also sweep the accumulational dust in bottom simultaneously, guarantees electric precipitation and ash bucket safe operation.
Simultaneously, when ash bucket charge level indicator normal operating, the device provides the auxiliary monitoring foundation (negative pressure value height) for it, when the charge level indicator is out of order, through the change of negative pressure value in the ash bucket, can also judge the ash grain condition of piling up in the ash bucket, guarantees ash bucket normal operating.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor. Wherein:
FIG. 1 is a schematic view of the overall structure of the embodiment of the ash bucket level auxiliary device of coal-fired power plant.
FIG. 2 is an embodiment of the utility model provides a coal fired power plant ash bucket material level auxiliary device clean subassembly schematic structure.
FIG. 3 is an inside schematic view of the moving track according to the embodiment of the auxiliary device for ash level in the ash bucket of coal-fired power plant.
FIG. 4 is a schematic view of the scraper component structure according to the embodiment of the auxiliary device for ash level in ash bucket of coal-fired power plant.
FIG. 5 is an embodiment of the coal-fired power plant ash bucket material level auxiliary device of the present invention, the scraper car structure diagram is shown.
Fig. 6 is the embodiment of the system for detecting ash level in ash bucket of coal-fired power plant according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying the present invention are described in detail below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 4, for a first embodiment of the present invention, an overall structure schematic diagram of an ash bucket material level auxiliary device of a coal-fired power plant is provided, as shown in fig. 1, the overall structure of the present invention includes a device main body 100, including an ash bucket 101 and a negative pressure sampling tube 102, the negative pressure sampling tube 102 is disposed on one side of the ash bucket 101; the cleaning assembly 200 is connected with the device main body 100 and comprises a purging component 201 and a scraper component 202, and the scraper component 202 is arranged on the inner wall of the ash bucket 101.
Specifically, the electric dust remover of the coal-fired power plant: the electric dust collector is a necessary corollary equipment of a thermal power plant, and has the function of removing particle smoke dust in the smoke discharged by a coal-fired boiler, thereby greatly reducing the smoke dust amount discharged into the atmosphere, and being important environment-friendly equipment for improving environmental pollution and air quality.
An ash bucket 101: the dust collector is arranged at the lower part of the electric dust collector, collects the dust particles collected by the electric dust collector and conveys the collected dust particles to a dust field through a dust conveying pipeline. A charge level indicator: the level gauge is an instrument installed in the ash hopper for detecting the position of the dust in the ash hopper, and is used for detecting the amount of the ash in the ash hopper and feeding the amount of the ash back to the controller so as to perform the dust transferring operation when the ash is full.
An induced draft fan: the fan is a device which generates negative pressure through the rotation of an impeller and further extracts air from a system (device), and is generally arranged at the tail end of a boiler and used for extracting hot flue gas in a hearth. Negative pressure sampling tube 102: the pipeline adopts a pipeline with phi 57mm and is connected with the ash bucket in a welding way.
The concrete expression is as follows: when the level indicator detects that the dust is too much, the cleaning assembly 200 operates, the scraper component 202 cleans the inner wall of the ash bucket along with the track, and the bottom of the ash bucket is difficult to clean, and then the blowing component 201 is adopted, and the blowing component cleans the bottom of the ash bucket 101 by using the wind pressure generated by the fan.
Example 2
The second embodiment of the present invention is shown in fig. 1 to 5, and is different from the first embodiment in that: the upper side of the negative pressure sampling tube 102 is provided with a sampling primary valve 103, and the other end is provided with a sampling secondary valve 104, and the sampling secondary valve 104 is arranged on one side of the sampling primary valve 103. The purging component 201 comprises a compressed air purging pipeline 212 and a compressed air purging valve 203, wherein the compressed air purging pipeline 212 is arranged on one side of the negative pressure sampling pipe 102, and the compressed air purging valve 203 is arranged on the upper side of the compressed air purging pipeline 212.
The scraper member 202 includes a scraper car 204 and a movement track 205, and the scraper car 204 is disposed on the upper side of the movement track 205 and slides along the movement track 205. The motion track 205 is arranged on the inner wall of the ash bucket 101, the motion track 205 is arranged in a spiral shape, and both ends of the motion track 205 are arranged on the upper side of the ash bucket 101. The upper side of the ash bucket 101 is provided with a stay wire motor 206, the front end of the stay wire motor 206 is provided with a stay wire roller 207, and two stay wire motors 206 are arranged oppositely. The front end of the scraper car 204 is provided with a scraper 208, the bottom of the scraper car is provided with a roller 209, the rear side of the scraper 208 is provided with a rolling shaft 210, and the rolling shaft 210 is connected with a pull wire 211. Both ends of the wire 211 are connected to the wire roller 207 at the front side of the wire motor 206, respectively.
In this embodiment, a sampling primary valve 103 is disposed on the upper side of the negative pressure sampling tube 102, and a sampling secondary valve 104 is disposed on the other end, the sampling secondary valve 104 being disposed on the side of the sampling primary valve 103. The purging component 201 comprises a compressed air purging pipeline 212 and a compressed air purging valve 203, wherein the compressed air purging pipeline 212 is arranged on one side of the negative pressure sampling pipe 102, and the compressed air purging valve 203 is arranged on the upper side of the compressed air purging pipeline 212.
Further, the detailed functions of the components are as follows, sampling primary valve 103: and a manual ball valve is adopted, and when the follow-up equipment is in fault and needs to be overhauled, the valve is closed for temporary isolation. Sampling secondary valve 104: when the pipeline is blocked, the valve is closed, the valve 203 is opened, and compressed air in the purging pipeline 202 reversely enters the ash bucket 101 to purge the negative pressure sampling pipe 102. Compressed air purge line 212: when the negative pressure sampling pipeline 102 is blocked, the negative pressure sampling pipeline is purged and dredged. Compressed air purge valve 203: and opening the negative pressure sampling tube when the negative pressure sampling tube is purged and dredged.
Further, the blade member 202 includes a blade car 204 and a movement rail 205, and the blade car 204 is provided on the upper side of the movement rail 205 to slide along the movement rail 205. The motion track 205 is arranged on the inner wall of the ash bucket 101, the motion track 205 is arranged in a spiral shape, and both ends of the motion track 205 are arranged on the upper side of the ash bucket 101. The upper side of the ash bucket 101 is provided with a stay wire motor 206, the front end of the stay wire motor 206 is provided with a stay wire roller 207, and two stay wire motors 206 are arranged oppositely. The moving track 205 is suspended on the inner wall of the ash bucket 101, passes through the interior of the scraper 204, and the roller 209 contacts with the scraper to drive the roller 209 to roll.
Further, the front end of the scraper car 204 is provided with a scraper 208, the bottom of the scraper car is provided with a roller 209, the rear side of the scraper 208 is provided with a rolling shaft 210, and the rolling shaft 210 is connected with a pull wire 211. Both ends of the wire 211 are connected to the wire roller 207 at the front side of the wire motor 206, respectively. The pull wire 211 on the rolling shaft 210 is generally in a fixed state, and the pulling force mainly comes from the pull wire motor 206 on both sides.
The operation process is as follows: when the ash bucket 101 level gauge detects that the dust is excessive, a pull wire motor 206 is controlled to operate to drive a pull wire roller 207 to rotate, a pull wire 211 is pulled, and the scraper car 204 is driven to slide on a motion track 205. When the vehicle reaches one of the pull motors 206, the other pull motor 206 operates to pull the scraper car 204 in the other direction. When the scraper car 204 is pulled, the scrapers 208 on both sides clean the dust deposited on the inner wall of the dust hopper 101 and difficult to clean. The dust falls to the bottom of the dust hopper 101, and the compressed air purge valve 203 is opened to blow the air from the compressed air purge pipe 212 into the bottom of the dust hopper 101, so as to clean the bottom of the dust hopper again.
The rest of the structure is the same as in example 1.
Example 3
Referring to fig. 4 to 6, a third embodiment of the present invention is shown in a coal-fired power plant ash bucket material level monitoring system, which comprises the above coal-fired power plant ash bucket material level auxiliary device, and further comprises: the monitoring assembly 300, including the pressure valve unit 301 and the pressure setting tube 302, are disposed on one side of the negative pressure sampling tube 102. The pressure valve part 301 comprises an instrument sampling valve 303 and a negative pressure monitoring instrument 304, one side of the negative pressure sampling tube 102 is connected with a pressure measurement setting tube 302, one side of the pressure measurement setting tube 302 is provided with the instrument sampling valve 303, and the end part is provided with the negative pressure monitoring instrument 304.
Specifically, coal fired power plant's electric precipitation is installed in draught fan (suction fan) preceding, under the general condition, electric precipitation and the inside operation of maintaining at negative pressure state of ash bucket 101, utilize this point, install negative pressure monitoring subassembly 300 on electric precipitation ash bucket 101, under the normal conditions, this subassembly 300 continuously monitors and shows the negative pressure value, if ash bucket 101 takes place the grist and piles up, then the negative pressure is destroyed, remind maintenance and operation personnel to change defeated ash system operation mode, guarantee that the inside grist of ash bucket 101 is in time clear away.
The system is designed based on the actual operation condition on site, and the device is used together with the existing level gauge. A hole with the diameter of 57mm is formed in the middle of the ash bucket 101 body, a pipeline with the diameter of 57mm (a negative pressure sampling pipeline 102) is welded to the ash bucket 101 body, and the sampling pipeline 102 extends to the maintenance platform.
When electric dust removal is carried out, the electric dust removal and ash bucket 101 is in a negative pressure state in the interior under the action of the draught fan, if the ash bucket does not have accumulated ash, a negative pressure monitoring instrument arranged on the sampling pipeline always displays negative pressure, if the ash level is high, the negative pressure sampling pipeline 102 is blocked, the negative pressure value is damaged, and at the moment, maintenance and operation personnel are reminded to pay attention to the ash level and adjust an ash conveying mode.
The specific working process is as follows: when the electric dust collector operates, the sampling primary valve 103, the sampling secondary valve 104 and the instrument sampling valve 303 are in an open state, the compressed air purging valve 203 is closed, and the negative pressure monitoring instrument 304 monitors the negative pressure value in the ash hopper 101 in real time and transmits the value to a DCS picture for monitoring by operating personnel.
When the gray level is low, the negative pressure monitor 304 indicates a negative value. When the ash level is increased to the opening of the negative pressure sampling pipeline 102, the opening is blocked, the negative pressure value is destroyed, the material level is shown to reach the negative pressure sampling pipeline 102, and the operation and maintenance personnel are reminded to check and process. If the device is blocked or works regularly to blow and dredge, the compressed air blow valve 203 is opened, the sampling primary valve 103, the sampling secondary valve 104 and the instrument sampling valve 303 are closed, and compressed air in the pipeline 212 is blown and blown by the compressed air.
The key point of the auxiliary negative pressure monitoring device for the ash bucket material level is to monitor the negative pressure value in the ash bucket in real time, and the main protection point is in the form of material level monitoring. Compared with the prior art, the advantages are as follows: the dual guarantee of ash bucket material level monitoring improves electric precipitation operational reliability. Convenient observation, no external interference factor and high reliability. The long-period operation can be realized, and the later maintenance cost is lower.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a coal fired power plant ash bucket material level auxiliary device which characterized in that: comprises the steps of (a) preparing a substrate,
the device comprises a device main body (100) and a vacuum sampling tube (102), wherein the device main body comprises an ash bucket (101) and the vacuum sampling tube (102), and the vacuum sampling tube (102) is arranged on one side of the ash bucket (101);
the cleaning assembly (200) is connected with the device main body (100) and comprises a purging component (201) and a scraper component (202), and the scraper component (202) is arranged on the inner wall of the ash bucket (101).
2. The coal fired power plant ash bucket level assist device of claim 1, wherein: the sampling device is characterized in that a sampling primary valve (103) is arranged on the upper side of the negative pressure sampling tube (102), a sampling secondary valve (104) is arranged at the other end of the negative pressure sampling tube, and the sampling secondary valve (104) is arranged on one side of the sampling primary valve (103).
3. The coal fired power plant ash bucket level assist device of claim 2, wherein: the purging component (201) comprises a compressed air purging pipeline (212) and a compressed air purging valve (203), the compressed air purging pipeline (212) is arranged on one side of the negative pressure sampling pipe (102), and the compressed air purging valve (203) is arranged on the upper side of the compressed air purging pipeline (212).
4. The coal fired power plant ash bucket level assist device of claim 3, wherein: the scraper component (202) comprises a scraper car (204) and a moving track (205), wherein the scraper car (204) is arranged on the upper side of the moving track (205) and slides along the moving track (205).
5. The coal fired power plant ash bucket level assist device of claim 4, wherein: the movement track (205) is arranged on the inner wall of the ash bucket (101), the movement track (205) is arranged to be spiral, and two ends of the movement track are arranged on the upper side of the ash bucket (101).
6. The coal fired power plant ash bucket level assist device of claim 5, wherein: the ash bucket (101) is provided with a stay wire motor (206) on the upper side, a stay wire roller (207) is arranged at the front end of the stay wire motor (206), and the two stay wire motors (206) are arranged oppositely.
7. The coal fired power plant ash bucket level assist device of claim 6, wherein: the scraper car (204) is characterized in that a scraper (208) is arranged at the front end of the scraper car (204), rollers (209) are arranged at the bottom of the scraper car, a rolling shaft (210) is arranged on the rear side of the scraper (208), and a pull wire (211) is connected to the rolling shaft (210).
8. The coal fired power plant ash bucket level assist device of claim 7, wherein: two ends of the stay wire (211) are respectively connected to a stay wire roller (207) on the front side of the stay wire motor (206).
9. The utility model provides a coal fired power plant ash bucket material level monitoring system which characterized in that: the coal-fired power plant ash bucket material level auxiliary device as defined in claims 1-8, further comprising,
the monitoring assembly (300) comprises a pressure valve part (301) and a pressure measuring and setting pipe (302), and the pressure valve part and the pressure measuring and setting pipe are arranged on one side of the negative pressure sampling pipe (102).
10. The coal fired power plant ash bucket level monitoring system of claim 9, wherein: the pressure valve part (301) comprises an instrument sampling valve (303) and a negative pressure monitoring instrument (304), one side of the negative pressure sampling tube (102) is connected with a pressure measurement setting tube (302), one side of the pressure measurement setting tube (302) is provided with the instrument sampling valve (303), and the end part of the pressure measurement setting tube is provided with the negative pressure monitoring instrument (304).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221991677.2U CN218865208U (en) | 2022-07-31 | 2022-07-31 | Coal fired power plant ash bucket material level auxiliary device and monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221991677.2U CN218865208U (en) | 2022-07-31 | 2022-07-31 | Coal fired power plant ash bucket material level auxiliary device and monitoring system |
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| CN218865208U true CN218865208U (en) | 2023-04-14 |
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| CN202221991677.2U Active CN218865208U (en) | 2022-07-31 | 2022-07-31 | Coal fired power plant ash bucket material level auxiliary device and monitoring system |
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