CN220817780U - Steam soot blower capable of preventing boiler from blowing soot and carrying water - Google Patents
Steam soot blower capable of preventing boiler from blowing soot and carrying water Download PDFInfo
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- CN220817780U CN220817780U CN202322491087.4U CN202322491087U CN220817780U CN 220817780 U CN220817780 U CN 220817780U CN 202322491087 U CN202322491087 U CN 202322491087U CN 220817780 U CN220817780 U CN 220817780U
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- soot blowing
- soot
- blowing
- steam
- boiler
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- 239000004071 soot Substances 0.000 title claims abstract description 161
- 238000007664 blowing Methods 0.000 title claims abstract description 141
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000010963 304 stainless steel Substances 0.000 claims description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 21
- 239000012535 impurity Substances 0.000 abstract description 10
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of boilers, and particularly relates to a steam soot blower for preventing a boiler from blowing dust and carrying water. The gun barrel of the current long telescopic soot blower is provided with a device which can not warm the pipe and drain residual condensed water and impurities, and is easy to rust and blow down. The utility model provides a steam soot blower for preventing a boiler from blowing soot with water, which comprises a soot blowing steam inlet pipe, a soot blowing lift valve, a soot blowing inner pipe and a soot blowing barrel which are sequentially communicated, wherein a soot blowing nozzle and a drainage channel are arranged on the soot blowing barrel, the soot blowing nozzle and a corresponding soot blowing barrel part are arranged in a soot blowing sealing box behind a hearth retaining wall, the bottom end opening of the soot blowing sealing box is connected with a boiler drainage system, the soot blowing steam inlet pipe is communicated with the soot blowing inner pipe through a soot blowing bypass pipe, a manual valve, a filter and an electromagnetic valve for remote control are arranged on the soot blowing bypass pipe, and the drainage channel is communicated with the soot blowing sealing box. The utility model can solve the problems of rust and blowing loss caused by the cold state of the pipeline for the soot blowing gun tube heating tube, and ensure the safe and normal operation of the boiler.
Description
Technical Field
The utility model belongs to the technical field of boilers, and particularly relates to a steam soot blower for preventing a boiler from blowing dust and carrying water.
Background
The boiler soot blower is an important device in a boiler of a thermal power generating unit, and utilizes steam to blow a heating surface in the boiler to remove accumulated ash and slag on the heating surface, so as to improve heat transfer performance and heat exchange efficiency, ensure smooth channels in the boiler, reduce smoke resistance, further reduce station utilization rate and improve unit efficiency. In actual operation, effective drainage cannot be achieved due to long and complicated drainage pipelines, short drainage heating time and the like, so that the overheat degree of soot blowing steam is too low and condensed water accumulated water cannot be completely discharged. For the long telescopic soot blower, because the gun barrel is longer, the gun barrel cooled in the initial section of the soot blowing stroke is easy to condense into water when meeting steam, and the pipeline cannot effectively keep warm, and the like, the water is particularly accumulated, and the accumulated water can rust the pipe wall and peel off impurities. Compared with steam, the high-speed water drop (impurity) jet flow momentum is large, so that the heating surface is seriously damaged, and meanwhile, the water drop is sprayed on the high-temperature heating surface, so that the high-temperature pipeline generates thermal stress, and the service life of the pipeline is shortened; if the boiler is purged with wet steam for a long time, thermal shock and corrosion are caused, and boiler elements are damaged. In recent years, the wall of a heating surface is blown thin due to the water carried by a soot blower, so that the tube explosion of a boiler is caused, and the accident of non-stop of a unit is caused.
Disclosure of utility model
The utility model provides a steam soot blower for preventing boiler soot blowing from carrying out water, which aims at solving the technical problems that a gun barrel part of a current long telescopic soot blower cannot be heated and residual condensed water and impurities are drained, corrosion and blowing damage equipment are easy to cause, potential safety hazards exist and the like.
The utility model solves the technical problems by adopting the technical scheme that: the utility model provides a prevent steam soot blower of boiler soot blowing area water, includes soot blowing admission pipe, soot blowing poppet valve, soot blowing inner tube and soot blowing barrel that communicate in proper order, sets up soot blowing nozzle and drainage passageway on the soot blowing barrel, and in soot blowing sealing box behind the furnace retaining wall was arranged in to soot blowing nozzle and the corresponding soot blowing barrel part, the sealed box bottom opening of soot blowing connects boiler drainage system, characterized by soot blowing admission pipe and soot blowing inner tube pass through a soot blowing bypass pipe intercommunication, soot blowing bypass pipe is last to soot blowing inner tube from soot blowing admission pipe one side set up manual valve, filter and the solenoid valve that is used for remote control in proper order, drainage passageway intercommunication soot blowing sealing box. According to the utility model, the soot blowing inner pipe is connected with the existing soot blowing steam inlet pipe, and the soot blowing bypass pipe is directly connected with the soot blowing inner pipe after the soot blowing lift valve, so that a small amount of steam can be fed into the soot blowing inner pipe to preheat the soot blowing barrel, and the steam condensation ponding and the rust influence caused by the steam condensation ponding are avoided in the initial stage of the soot blowing stroke; condensed water existing in the gun barrel can flow into the soot blowing sealing box through the drainage channel and then is discharged to a boiler drainage system through an opening at the bottom end of the sealing box; the filter is used for filtering the steam conveyed by the soot blowing bypass pipe and removing particle impurities in the steam; the manual valve and the electromagnetic valve are matched to open and close the soot blowing bypass pipe to control steam to pass through the soot blowing bypass pipe, wherein the electromagnetic valve establishes a foundation for the remote control of a follow-up DCS system, the electromagnetic valve can be automatically opened before each time of the soot blower is put into use, a soot blowing bypass pipe channel is opened to automatically heat a pipe, the electromagnetic valve is automatically closed after the heat pipe is finished, the soot blower is put into normal soot blowing cleaning work, and then the next soot blower heat pipe is put into work repeatedly, so that all the soot blowers are put into work sequentially; the electromagnetic valve is used for switching tightly and flexibly, and can have correct feedback. The boiler drain system is the prior art of thermal generator set boilers.
As a further improvement and supplement to the technical scheme, the utility model adopts the following technical measures: the soot blowing bypass pipe is made of 304 stainless steel seamless steel pipes with the outer diameter of 14mm and the wall thickness of 2mm, and is externally wrapped with an insulating layer. The soot blowing bypass pipe is made of 304 seamless stainless steel pipes with phi 14 x 2, the bypass pipe can resist high pressure of 5Mpa and high temperature of 500 ℃ and corrosion, the heating pipe needs of steam input from the soot blowing bypass pipe are met, and the heat preservation layer is used for preserving heat of steam conveyed by the bypass pipe, so that the heating pipe effect is ensured.
The filter is a Y-shaped filter, a detachable filter element is arranged in the Y-shaped filter, an inlet and an outlet for connecting a soot blowing bypass pipe and a drain outlet for disassembling the filter element are arranged on the Y-shaped filter, and a detachable valve cap is arranged on the drain outlet. The Y-type filter eliminates impurities in the boiler steam to protect the normal use of the valve and the pipeline equipment; the inlet and the outlet on the filter are in the same straight line and are used for connecting the soot blowing bypass pipe, and the drain outlet on the side face is provided with a detachable valve cap, so that the filter core can be detached for cleaning or replacement after the filter is used for a period of time, and normal filtration is maintained.
And the inlet and the outlet of the Y-shaped filter are both internal threaded interfaces and are in threaded connection with the soot blowing bypass pipe. The Y-shaped filter is connected with the soot blowing bypass pipe by adopting a threaded interface, so that the Y-shaped filter is convenient to assemble and disassemble. The Y-shaped filter in the embodiment is also matched with a soot blowing bypass pipe of DN14, and can resist high pressure of 5Mpa and high temperature of 500 ℃.
The filter element is a filter screen or a filter cylinder. The filter core can adopt a filter screen or a filter cylinder and other structures which are convenient to disassemble and assemble, and the filter screen or the filter cylinder can be taken out for cleaning after the valve cap is disassembled.
The filter screen is an 80-mesh stainless steel filter screen. The 80-mesh stainless steel filter screen can filter impurities such as scrap iron and the like in steam generated by the boiler, protect pipeline equipment and ensure that the steam smoothly passes through.
The manual valve is a stainless steel needle valve. The needle valve has the advantages of convenient disassembly and assembly, good explosion-proof, pressure-proof and sealing performances, long service life and convenient maintenance in the later period. The stainless steel needle valve is matched with the soot blowing bypass pipe in use, the stainless steel needle valve with DN14 specification is adopted, the pressure bearing capacity of the needle valve is more than 1.5 times of that of the soot blowing steam inlet pipe, the temperature bearing capacity is more than 1.2 times of that of the soot blowing steam inlet pipe, and the needle valve is tight when being fully closed.
An independent temperature detector is arranged on the soot blowing inner pipe. The temperature of the soot blowing inner pipe is independently monitored by a temperature detector to control soot blowing, when the temperature is lower than 230 ℃, steam is easy to carry water, wet steam blowing can be formed, thermal shock and corrosion of equipment are caused, therefore, the soot blowing needs to be suspended below the temperature, the water is drained, and the range of the temperature detector is preferably 0-600 ℃.
The utility model provides a steam soot blower for preventing a boiler from blowing dust and carrying water, which is characterized in that a heating pipe is sequentially controlled through an electromagnetic valve on a bypass pipe and then is put into operation, meanwhile, condensed water in a soot blowing gun barrel flows into a boiler drainage system after passing through a drainage channel and a soot blowing sealing box, the problems that the heating pipe cannot be used and residual condensed water cannot be drained before the existing steam soot blower for blowing dust and water in the boiler is put into operation are solved, and impurities such as scrap iron, welding slag and the like in a pipeline and steam are intercepted by a bypass Y-shaped filter; after the soot blowing is finished, the bonnet can be detached to clean the filter screen, so that impurities are removed, and the filter is ensured to be normally used.
Drawings
Fig. 1: the utility model is a schematic structural diagram.
In the figure: 1. the device comprises a manual valve, a 2.Y-type filter, a 3-type electromagnetic valve, a 4-type filter screen, a 5-type soot-blowing bypass pipe, a 6-type soot-blowing inner pipe, a 7-type soot-blowing steam inlet pipe, a 8-type soot-blowing lift valve, a 9-type soot-blowing barrel, a 10-type soot-blowing nozzle, a 11-type soot-blowing sealing box, a 12-type hearth protecting wall, a 13-type junction box and a 14-type temperature detector.
Detailed Description
The utility model is further described with reference to the accompanying drawings and detailed description.
As shown in figure 1, a steam soot blower for preventing boiler soot blowing with water comprises a soot blowing inlet pipe 7, a soot blowing lifting valve 8, a soot blowing inner pipe 6 and a soot blowing barrel 9 which are sequentially communicated, wherein a soot blowing nozzle 10 and a drainage channel are arranged on the soot blowing barrel 9, the soot blowing nozzle is commonly used as a Venturi nozzle, the soot blowing nozzle 10 and the corresponding soot blowing barrel 9 are partially arranged in a soot blowing sealing box 11 behind a hearth retaining wall 12, only when in soot blowing work, the soot blowing barrel moves forward and drives the soot blowing nozzle to penetrate through the hearth retaining wall and extend into the hearth, an opening at the bottom of the soot blowing sealing box 11 is connected to a boiler drainage system, the soot blowing inlet pipe 7 and the soot blowing inner pipe 6 are communicated through a bypass soot blowing pipe 5, a manual valve 1, a Y-shaped filter 2 and an electromagnetic valve 3 for remote control are sequentially arranged on one side of the soot blowing inlet pipe 7 on the bypass soot blowing pipe 5, and the drainage channel is communicated with the soot blowing sealing box 11. The soot blowing bypass pipe in the embodiment is manufactured by adopting 304 seamless stainless steel pipes with phi 14 x 2, the outer diameter of the steel pipes is 14mm, the wall thickness is 2mm, and an insulating layer is wrapped outside the steel pipes; the Y-shaped filter 2 is internally provided with a detachable filter element, preferably a filter screen 4, the filter screen 4 adopts an 80-mesh stainless steel filter screen, in addition, the filter screen can be replaced by a filter cartridge, the filter is provided with an internal thread inlet and an internal thread outlet which are used for connecting a soot blowing bypass pipe 5 and a drain outlet for disassembling the filter element, and the drain outlet is provided with a detachable valve cap; the manual valve is a stainless steel needle valve; an independent temperature detector 14 is also arranged on the soot blowing inner pipe, and soot blowing is suspended when the detected temperature is lower than 230 ℃ to carry out hydrophobic. In addition, the sootblowers also include a conventional junction box 13, the boiler drain system being prior art to thermal genset boilers.
During operation, before the thermal state of the soot blower is put into operation, the soot blower barrel is fully warmed, at the moment, the manual valve is placed in the full-open position, the soot blower barrel is placed in the stop position and is left behind the hearth retaining wall as shown in the figure, and the soot blower barrel part where the soot blower nozzle is located is also in the soot blower sealing box. When the soot blower is used for blowing, the electromagnetic valve is also opened before the first soot blower is put into operation, steam is sent out of the heating pipe from the soot blowing bypass pipe, when the soot blower is used for heating pipe, the soot blowing nozzle stays in the soot blowing sealing box, condensed water is discharged to the boiler drainage system through the drainage channel and the soot blowing sealing box when the heating pipe is used for heating pipe, the electromagnetic valve is closed after the heating pipe is finished, the soot blower is put into operation to purge the heating surface of the hearth, and simultaneously, the electromagnetic valve of the next soot blower to be put into operation is opened for heating pipe, so that the soot blowers are sequentially opened for heating pipe and put into soot blowing operation. When the boiler is not subjected to soot blowing or is not heated, the valve cap on the Y-shaped filter can be disassembled, and the filter screen is taken out for cleaning. The method provided by the utility model has the advantages that the heating of the heating pipes of the boiler soot blower before the use is realized, the residual condensed water and impurities are discharged, the steam condensation ponding rust pipeline and blowing damage equipment caused by the soot blower barrel in a cold state are prevented, non-stop accidents such as pipe explosion and the like are caused, and the normal operation of the boiler is ensured.
Claims (8)
1. The utility model provides a prevent steam soot blower of boiler soot blowing area water, includes soot blowing admission pipe (7), soot blowing poppet valve (8), soot blowing inner tube (6) and soot blowing barrel (9) of sequential intercommunication, sets up soot blowing nozzle (10) and drainage passageway on soot blowing barrel (9), in soot blowing sealing box (11) at furnace retaining wall (12) rear are arranged in to soot blowing nozzle (10) and corresponding soot blowing barrel (9) part, soot blowing sealing box (11) bottom opening joint boiler drainage system, characterized by soot blowing admission pipe (7) and soot blowing inner tube (6) are through a soot blowing bypass pipe (5) intercommunication, soot blowing bypass pipe (5) are gone up from soot blowing admission pipe (7) one side and are blown soot blowing inner tube (6) and are set up manual valve (1), filter and solenoid valve (3) that are used for remote control in proper order, drainage passageway intercommunication soot blowing sealing box (11).
2. Steam sootblower for preventing boiler sootblowing with water according to claim 1, characterized in that said sootblowing bypass tube (5) is made of 304 stainless steel seamless steel tube with outer diameter 14mm and wall thickness 2mm, and is externally wrapped with an insulation layer.
3. The steam soot blower for preventing boiler soot blowing from carrying water according to claim 1, wherein the filter is a Y-shaped filter (2), a detachable filter element is arranged in the Y-shaped filter (2), an inlet and an outlet for connecting a soot blowing bypass pipe (5) and a drain outlet for detaching the filter element are arranged on the Y-shaped filter (2), and a detachable valve cap is arranged on the drain outlet.
4. A steam soot blower for preventing boiler soot blowing from carrying water according to claim 3, characterized in that the inlet and the outlet of the Y-shaped filter (2) are both internal threaded interfaces and are in threaded connection with the soot blowing bypass pipe (5).
5. A steam sootblower for preventing boiler sootblowing with water according to claim 3, characterized in that said filter cartridge is a filter screen (4) or a filter cartridge.
6. Steam sootblower preventing boiler sootblowing with water according to claim 5, characterized in that said filter screen (4) is an 80 mesh stainless steel filter screen (4).
7. Steam sootblower preventing boiler sootblower carrying water according to claim 1, characterized in that said manual valve (1) is a stainless steel needle valve.
8. Steam sootblower preventing boiler sootblowing with water according to any of the claims 1-7, characterized in that a separate temperature detector (14) is provided on the sootblowing inner tube (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322491087.4U CN220817780U (en) | 2023-09-13 | 2023-09-13 | Steam soot blower capable of preventing boiler from blowing soot and carrying water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322491087.4U CN220817780U (en) | 2023-09-13 | 2023-09-13 | Steam soot blower capable of preventing boiler from blowing soot and carrying water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220817780U true CN220817780U (en) | 2024-04-19 |
Family
ID=90676193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322491087.4U Active CN220817780U (en) | 2023-09-13 | 2023-09-13 | Steam soot blower capable of preventing boiler from blowing soot and carrying water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220817780U (en) |
-
2023
- 2023-09-13 CN CN202322491087.4U patent/CN220817780U/en active Active
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