CN217110811U - Soot blower barrel monitoring system - Google Patents
Soot blower barrel monitoring system Download PDFInfo
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- CN217110811U CN217110811U CN202221017279.0U CN202221017279U CN217110811U CN 217110811 U CN217110811 U CN 217110811U CN 202221017279 U CN202221017279 U CN 202221017279U CN 217110811 U CN217110811 U CN 217110811U
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- range finder
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Abstract
The utility model belongs to the technical field of soot blower monitoring, and particularly discloses a soot blower barrel monitoring system, which comprises a first digital laser range finder; the first digital laser range finder is arranged on the soot blower shell; the second digital laser range finder is arranged on the end surface of the soot blower shell, which is provided with a soot blower barrel outlet; the digital positioning instrument is arranged on the shell of the soot blower, and the inner ends of the digital positioning instrument and the barrel of the soot blower are positioned on the same radial line when the barrel of the soot blower does not work; the two digital dial indicators are arranged between the furnace wall and the soot blower and symmetrically arranged relative to the soot blowing holes on the furnace wall; the signal output ends of the first digital laser range finder, the second digital laser range finder and the digital position finder are connected with the signal input end of the controller, and the signal of the digital dial indicator is electrically connected with the controller. The barrel parameters of the soot blower are collected through various sensors, the function of accurate positioning can be realized, the potential safety hazard caused by soot blower faults is avoided, and the safety and the stability are improved.
Description
Technical Field
The utility model belongs to the technical field of soot blower monitoring, concretely relates to soot blower barrel monitoring system.
Background
The heating surface of the coal-fired boiler of the thermal power plant prevents dust deposition and coking, and a soot blower is usually designed to carry out periodic purging, so that the problems that the heat transfer efficiency is reduced due to the dust deposition of a heating surface pipe, and equipment is damaged due to overtemperature and corrosion are avoided. The soot blower mainly adopts a steam soot blower which is divided into a long telescopic type, a semi-telescopic type and a short telescopic type; the steam soot blowing system mainly comprises a soot blowing steam pipeline system, a steam soot blower and a program control device.
The prior steam soot blower mainly has the following problems in the actual use process:
the telescopic part (soot blowing gun) of the long telescopic soot blower is in a high-temperature environment due to long-term work, and the strength of a material of a gun barrel is gradually reduced due to stress change, so that the gun barrel is easy to bend and deform, the operation is jammed, and the gun barrel cannot exit in time;
the soot blower works for a long time, the wall thickness of a gun barrel of the soot blower gun is reduced due to the abrasion of smoke dust, and the bending deformation is intensified; the bending deflection of the gun barrel in the working process is large, so that the soot blowing distance between the gun head and the heating surface is too small, and the heating surface is easily blown and damaged; meanwhile, the gun barrel is seriously bent and deformed, so that the gun barrel is more easily jammed in operation and even can not exit from a hearth, the gun barrel is burnt out and broken, and unsafe events are caused;
the soot blowing gun nozzle frequently blows to a heating surface pipe due to deviation of a blowing angle, so that the heating surface is easily blown to be damaged, particularly when steam with water is generated, the heating surface is serious, and the blowing loss of the pipe in a soot blowing area is serious due to incapability of finding the pipe in time, so that explosion and leakage are caused;
the factors often cause the steam soot blower to blow and damage the heating surface, so that serious thinning and cracks are caused, the gun barrel is broken, falls and damages the heating surface below the gun barrel, and the like, so that the pipe explosion and furnace shutdown are caused, and the safety production of a power plant is seriously influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a soot blower barrel monitoring system damages to be difficult to the control in order to solve current soot blower and leads to the technical problem of incident to appear.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a soot blower barrel monitoring system comprises a first digital laser range finder, a second digital laser range finder, a digital dial indicator, a digital locator and a PLC control cabinet;
the first digital laser range finder is arranged in the middle of the soot blower shell;
one end face of the soot blower shell is provided with a soot blower barrel outlet, and the second digital laser range finder is arranged on the end face of the soot blower shell provided with the soot blower barrel outlet;
the digital positioning instrument is arranged on the shell of the soot blower, and is positioned on the same radial line with the inner end of the soot blower barrel when the soot blower barrel does not work;
the two digital dial indicators are arranged between the furnace wall and the soot blower and symmetrically arranged relative to the soot blowing holes on the furnace wall;
the signal output ends of the first digital laser range finder, the second digital laser range finder and the digital position finder are connected with the signal input end of the PLC control cabinet, and the digital dial indicator is electrically connected with the PLC control cabinet.
The utility model discloses a further improvement lies in: and the middle points of the axial lines of the first digital laser range finder and the soot blower gun barrel are positioned on the same radial line when the first digital laser range finder and the soot blower gun barrel do not work.
The utility model discloses a further improvement lies in: the PLC control cabinet is a control cabinet and is used for acquiring data of the first digital laser range finder, the second digital laser range finder and the digital position finder and controlling the rise and fall of the digital dial indicator probe, and the PLC control cabinet is also used for supplying power to the first digital laser range finder, the second digital laser range finder, the digital dial indicator and the digital position finder.
The utility model discloses a further improvement lies in: and the signal output end of the PLC control cabinet is connected with the signal input end of the DCS.
The utility model discloses a further improvement lies in: an alarm is also arranged in the control cabinet.
The utility model discloses a further improvement lies in: the first digital laser range finder, the second digital laser range finder and the digital locator are fixed on the soot blower shell through welding or glue.
The utility model discloses a further improvement lies in: and the first digital laser range finder, the second digital laser range finder, the digital dial indicator and the digital locator are connected with the PLC control cabinet through cables.
The utility model discloses a further improvement lies in: the digital dial indicator is a magnetic control digital dial indicator.
Compared with the prior art, the utility model discloses at least, including following beneficial effect:
1. the utility model discloses a first digital laser range finder, second digital laser range finder, digital percentage table and digital locator, the soot blower barrel parameter is gathered to the high accuracy, effective on-line measuring blows soot barrel wall thickness, bending deflection and soot blower shower nozzle pinpoint the problem and realize the function of early warning, has avoided the potential safety hazard that the soot blower trouble brought, has improved security and stability;
2. each part of the utility model can be detached, cleaned, maintained and replaced independently, and the utility model has simple maintenance and strong convenience;
3. the utility model discloses can insert unit DCS system, increase online real-time display and the hierarchical early warning function of risk hidden danger, make the staff grasp the behavior of soot blower more comprehensively.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a soot blower barrel monitoring system according to the present invention;
fig. 2 is a control block diagram of a soot blower barrel monitoring system of the present invention.
In the figure: 1. a first digital laser range finder; 2. a second digital laser rangefinder; 3. a digital dial indicator; 4. a digital locator; 5. a furnace wall; 6. a sootblower housing; 7. a PLC control cabinet; 8. blowing ash holes; 9. a DCS system; 10. a soot blower.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.
The following detailed description is exemplary in nature and is intended to provide further explanation of the invention as claimed. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.
Example 1
A soot blower barrel monitoring system is installed on a furnace wall 5 opposite to a soot blower shell 6 and a soot blower barrel 10, a soot blower comprises a soot blower shell 6 and a soot blower barrel 10, the soot blower shell 6 is sleeved on the outer side of the soot blower barrel 10, the soot blower barrel 10 is longer than the soot blower, an outlet is formed in the side wall of the soot blower shell 6 and used for enabling the soot blower barrel 10 to extend out, two ends of the soot blower barrel 10 are respectively an extending end and an inner end, the extending end is used for extending out from the outlet of the soot blower shell 6, the inner end of the soot blower barrel 10 is always located inside the soot blower barrel shell 6, the soot blower barrel 10 is perpendicular to the furnace wall 5, the soot blower barrel 10 is provided with a soot blowing hole 8 opposite to the furnace wall 5, as shown in fig. 1-2, the digital laser distance measuring device comprises a first digital laser distance measuring instrument 1, a second digital laser distance measuring instrument 2, a digital dial indicator 3, a digital locator 4 and a controller 7;
the first digital laser range finder 1 is arranged on a soot blower shell 6;
the second digital laser range finder 2 is arranged on the side wall of the outlet of the soot blower gun barrel 10;
the digital positioning instrument 4 is arranged on the soot blower shell 6, and the innermost end of the digital positioning instrument 4 and the soot blower gun barrel 10 is positioned on the same radial line when the two ends are not in work;
two digital dial indicators 3 are arranged between the furnace wall 5 and the soot blower, and the two digital dial indicators 3 are symmetrically arranged about a soot blowing hole 8 on the furnace wall 5;
the digital dial indicator 3 is a magnetic control digital dial indicator, the rise and fall of a probe of the digital dial indicator 3 are controlled by the on-off of a circuit between the PLC control cabinet 7 and the digital dial indicator 3, when a magnetic control system in the digital dial indicator 3 is electrified, the probe of the digital dial indicator 3 is lifted, and when the magnetic control system in the digital dial indicator 3 is electrified, the probe of the digital dial indicator 3 falls.
The signal output ends of the first digital laser range finder 1, the second digital laser range finder 2 and the digital locator 4 are connected with the signal input end of the PLC control cabinet 7, and the digital dial indicator 3 is connected with the PLC control cabinet 7 in an electrical mode.
The first digital laser range finder 1 is arranged on the soot blower shell 6, the middle points of the non-working axial lines of the first digital laser range finder 1 and the soot blower barrel 10 are on the same radial line, and the first digital laser range finder 1 is arranged on the radial line of the middle points of the non-working axial lines of the soot blower barrel 10, so that the bending deflection of the soot blower barrel 10 can be reflected only by measuring the radial displacement of the soot blower barrel 10 through the first digital laser range finder 1.
The second digital laser range finder 2 is arranged on the side wall of the outlet of the soot blower barrel 10, and the second digital laser range finder 2 keeps a certain distance from the soot blower barrel 10 in the radial direction, so that the soot blower barrel 10 is prevented from damaging the second digital laser range finder 2;
the second digital laser range finder 2 is used for monitoring the operation position of a spray head of the soot blower in real time;
the digital positioning instrument 4 is arranged on the soot blower shell 6, the innermost end of the digital positioning instrument 4 and the soot blower gun barrel 10 when the soot blower gun barrel 10 does not work is positioned on the same radial line, and the innermost end of the soot blower gun barrel 10 when the soot blower gun barrel 10 does not work refers to the innermost end of the soot blower gun barrel 10 when the soot blower gun barrel 10 is completely retracted into the soot blower shell 6;
a detection point of the digital positioning instrument 4 is arranged at the innermost end of the soot blower barrel 10, the digital positioning instrument 4 judges whether the soot blower barrel 10 extends or not through the detection point, when the soot blower barrel 10 extends, the detection point is not positioned on the same radial line with the digital positioning instrument 4, the digital positioning instrument 4 sends a signal to the PLC control cabinet 7, the PLC control cabinet 7 controls the digital dial indicator 3 to lift a probe, and the soot blower barrel 10 is prevented from colliding and damaging the probe of the digital dial indicator 3; when the soot blower gun barrel 10 stops working and returns to the initial position, the detection point and the digital positioning instrument 4 are located on the same radial line, the digital positioning instrument 4 sends a signal to the PLC control cabinet 7, and the PLC control cabinet 7 controls the digital dial indicator 3 to drop the probe to detect the wall thickness of the soot blower gun barrel 10.
The PLC control cabinet 7 is a control cabinet and is used for acquiring data of the first digital laser range finder 1, the second digital laser range finder 2 and the digital locator 4 and controlling the rise and fall of the probe of the digital dial indicator 3, and the PLC control cabinet 7 is also used for supplying power to the first digital laser range finder 1, the second digital laser range finder 2, the digital dial indicator 3 and the digital locator 4.
An alarm is also arranged in the control cabinet.
And the signal output end of the PLC control cabinet 7 is connected with the signal input end of the DCS 9.
A first digital laser range finder 1, a second digital laser range finder 2, two digital dial indicators 3 and a digital locator 4 form a set of monitoring module;
each monitoring module is arranged on one soot blower, and a plurality of monitoring modules can be arranged on a plurality of soot blowers and controlled by the same PLC control cabinet 7.
Through linking to each other PLC switch board 7 with DCS 9, increase online real-time demonstration and the hierarchical early warning function of risk hidden danger, can show the in service behavior of different soot blowers on the display screen of DCS 9.
The first digital laser range finder 1, the second digital laser range finder 2 and the digital locator 4 are fixed on the soot blower shell 6 through welding or glue.
The first digital laser range finder 1, the second digital laser range finder 2, the digital dial indicator 3 and the digital locator 4 are connected with the PLC control cabinet 7 through cables.
Example 2
A soot blower gun barrel monitoring method is based on the soot blower gun barrel monitoring system and comprises the following steps:
before the soot blower works, the first digital laser range finder 1 measures the radial displacement of a soot blower gun barrel 10 and uploads data to the PLC control cabinet 7, the PLC control cabinet 7 compares the radial displacement of the soot blower gun barrel 10 with a first preset value, if the radial displacement is larger than or equal to the first preset value, the PLC control cabinet 7 controls an alarm to give an alarm, and if the radial displacement is smaller than the first preset value, the soot blower gun operates normally;
before the soot blower works, the second digital laser range finder 2 measures the original length of a soot blower gun barrel 10 and uploads the original length to the PLC control cabinet 7 for storage, when the soot blower starts to work, the second digital laser range finder 2 monitors the length from the inner end of the soot blower gun barrel 10 to the second digital laser range finder 2, if the length monitored by the second digital laser range finder 2 before the soot blower gun barrel 10 is displaced is different from the original length of the soot blower gun barrel 10, the PLC control cabinet 7 controls the soot blower to be locked and operated, and if the length monitored by the second digital laser range finder 2 before the soot blower gun barrel 10 is displaced is the same as the original length of the soot blower gun barrel 10, the PLC control cabinet works normally;
after the soot blower works, the second digital laser range finder 2 monitors the length from the inner end of the soot blower gun barrel 10 to the second digital laser range finder 2, if the length monitored by the second digital laser range finder 2 is different from the original length of the soot blower gun barrel 10, the PLC control cabinet 7 controls the alarm to give an alarm, and if the length monitored by the second digital laser range finder 2 is equal to the original length of the soot blower gun barrel 10, the soot blower works normally;
the digital positioning instrument 4 is used for monitoring the exit position of the soot blower gun barrel 10, when the soot blower gun barrel 10 is displaced, the digital positioning instrument 4 loses a detection point, the digital positioning instrument 4 sends a signal to the PLC control cabinet 7, and the PLC control cabinet 7 controls the probe of the digital dial indicator 3 to lift; when the soot blower digital positioning instrument 4 monitors that the soot blower gun barrel 10 is restored, the digital positioning instrument 4 sends a signal to the PLC control cabinet 7, and the PLC control cabinet 7 controls the probe of the digital dial indicator 3 to fall down;
the digital dial indicator 3 is used for measuring the thickness of the soot blower gun barrel 10 and uploading the thickness data to the PLC control cabinet 7, the PLC control cabinet 7 compares the thickness data with a second preset value, if the thickness data is larger than or equal to the second preset value, the PLC control cabinet 7 controls the alarm to give an alarm, and if the thickness data is smaller than the second preset value, the PLC control cabinet works normally.
The PLC control cabinet 7 is electrically connected with the DCS system 9 to realize the grading early warning,
the grading early warning specifically comprises the following steps: comparing the radial displacement of the soot blower gun barrel 10 with a first preset value and a third preset value, and if the radial displacement of the soot blower gun barrel 10 is greater than or equal to the third preset value, sending out a high-risk early warning on the DCS system 9;
if the radial displacement of the soot blower gun barrel 10 is smaller than a third preset value and is larger than or equal to a first preset value, a common early warning is sent out on the DCS system 9;
if the radial displacement of the soot blower gun barrel 10 is smaller than a first preset value, the soot blower works normally;
comparing the thickness of the sootblower barrel 10 with a second preset value and a fourth preset value;
if the thickness of the soot blower gun barrel 10 is larger than or equal to a fourth preset value, a high-risk early warning is sent out on the DCS system 9;
if the thickness of the soot blower gun barrel 10 is smaller than the fourth preset value and is larger than or equal to the second preset value, sending a common early warning on the DCS system 9;
if the thickness of the soot blower gun barrel 10 is smaller than the second preset value, the soot blower works normally.
The first preset value is 3 thousandth of the length of the soot blower gun barrel 10, and the third preset value is 5 thousandth of the length of the soot blower gun barrel 10; the second preset value is 15% of the sootblower barrel 10 thickness and the fourth preset value is 25% of the sootblower barrel 10 thickness.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes within the scope of the invention or within the scope equivalent to the invention are all embraced by the invention.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents of the embodiments of the invention may be made without departing from the spirit and scope of the invention, which should be construed as falling within the scope of the claims of the invention.
Claims (8)
1. A soot blower barrel monitoring system is characterized by comprising a first digital laser range finder (1), a second digital laser range finder (2), a digital dial indicator (3), a digital locator (4) and a PLC control cabinet (7);
the first digital laser range finder (1) is arranged in the middle of the soot blower shell (6);
one end face of the soot blower shell (6) is provided with an outlet of a soot blower barrel (10), and the second digital laser distance meter (2) is arranged on the end face of the soot blower shell (6) provided with the outlet of the soot blower barrel (10);
the two ends of the soot blower gun tube (10) are respectively an extension end and an inner end, the digital positioning instrument (4) is arranged on the soot blower shell (6), and the digital positioning instrument (4) and the inner end of the soot blower gun tube (10) during non-working are positioned on the same radial line;
the two digital dial indicators (3) are arranged between the furnace wall (5) and the soot blower, and the two digital dial indicators (3) are symmetrically arranged relative to the soot blowing holes (8) on the furnace wall (5);
the signal output ends of the first digital laser range finder (1), the second digital laser range finder (2) and the digital locator (4) are connected with the signal input end of the PLC control cabinet (7), and the digital dial indicator (3) is electrically connected with the PLC control cabinet (7).
2. A sootblower barrel monitoring system according to claim 1, characterized in that the first digital laser rangefinder (1) is on the same radial line as the sootblower barrel (10) non-operational mid-point of the axis.
3. The soot blower barrel monitoring system as claimed in claim 1, wherein the PLC control cabinet (7) is a control cabinet and is used for acquiring data of the first digital laser distance measuring instrument (1), the second digital laser distance measuring instrument (2) and the digital positioning instrument (4) and controlling the rise and fall of a probe of the digital percentage meter (3), and the PLC control cabinet (7) is also used for supplying power to the first digital laser distance measuring instrument (1), the second digital laser distance measuring instrument (2), the digital percentage meter (3) and the digital positioning instrument (4).
4. A sootblower barrel monitoring system as claimed in claim 1, characterized in that the PLC control cabinet (7) signal output is connected to a DCS system (9) signal input.
5. A sootblower barrel monitoring system as claimed in claim 3, wherein an alarm is also provided in the control cabinet.
6. A sootblower barrel monitoring system according to claim 1, characterized in that the first digital laser range finder (1), the second digital laser range finder (2) and the digital position finder (4) are fixed to the sootblower housing (6) by welding or glue.
7. A soot blower barrel monitoring system according to claim 1, characterized in that the first digital laser distance meter (1), the second digital laser distance meter (2), the digital percentage indicator (3) and the digital position indicator (4) are connected with the PLC control cabinet (7) by cables.
8. A sootblower barrel monitoring system according to claim 1, characterized in that said digital dial indicator (3) is a magnetically controlled digital dial indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221017279.0U CN217110811U (en) | 2022-04-28 | 2022-04-28 | Soot blower barrel monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221017279.0U CN217110811U (en) | 2022-04-28 | 2022-04-28 | Soot blower barrel monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217110811U true CN217110811U (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221017279.0U Active CN217110811U (en) | 2022-04-28 | 2022-04-28 | Soot blower barrel monitoring system |
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|---|---|
| CN (1) | CN217110811U (en) |
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2022
- 2022-04-28 CN CN202221017279.0U patent/CN217110811U/en active Active
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