CN217763494U - Water guide groove structure for preventing tube explosion of boiler heating surface - Google Patents
Water guide groove structure for preventing tube explosion of boiler heating surface Download PDFInfo
- Publication number
- CN217763494U CN217763494U CN202221424442.5U CN202221424442U CN217763494U CN 217763494 U CN217763494 U CN 217763494U CN 202221424442 U CN202221424442 U CN 202221424442U CN 217763494 U CN217763494 U CN 217763494U
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- Prior art keywords
- guiding gutter
- water chute
- water
- boiler
- drainage plate
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 238000010438 heat treatment Methods 0.000 title claims abstract description 23
- 238000004880 explosion Methods 0.000 title claims description 13
- 239000004071 soot Substances 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 5
- 230000006978 adaptation Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 11
- 208000037656 Respiratory Sounds Diseases 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 235000011293 Brassica napus Nutrition 0.000 description 1
- 240000008100 Brassica rapa Species 0.000 description 1
- 235000000540 Brassica rapa subsp rapa Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to an avoid guiding gutter structure of boiler heating surface booster, including guiding gutter and drainage plate, the guiding gutter is installed on the fin of wall bushing lower extreme, and the drainage plate is the arc structure, and radian and wall bushing are followed the adaptation down, and the guiding gutter is the groove box structure, and the guiding gutter passes through the drainage plate and links to each other with wall bushing's export, and the comdenstion water that produces in the steam soot blower barrel flows along the wall bushing, trickles through the drainage plate and sprays on the guiding gutter. Compared with the prior art, the utility model discloses make the comdenstion water that produces in the steam soot blower barrel flow along the wall bushing, trickle through the drainage plate and spray on the guiding gutter, the comdenstion water is in time dried on the guiding gutter, the comdenstion water can not with the sealed fin direct contact of furnace wall to prevent that fin from relapseing cold and hot reversal and producing the crackle, avoid the crackle to extend and lead to being heated the face pipe booster and leak.
Description
Technical Field
The utility model belongs to the technical field of the steam soot blower technique and specifically relates to an avoid boiler afterbody flue to receive guiding gutter structural design of hot side blast.
Background
In a thermal power plant, the heating surface of a boiler is easy to slag, and the slag not only influences the efficiency of the boiler, but also threatens the safe operation of the boiler. The steam soot blower is used as necessary equipment for removing ash on the heating surface of the boiler of the thermal power plant, and in actual operation, condensed water is inevitable due to the structural design and the working environment of the soot blower, so pipe explosion events caused by the condensed water are frequent.
Most of domestic large-scale thermal generator sets have the side wall-wrapped pipe leakage event. Chinese utility model patent CN202120578920.7 discloses a wall case device that leaks in monitoring steam soot blower installs wall temperature measurement station additional in soot blowing hole pipe lower part fin department, can the direct monitoring soot blower leak the situation that the comdenstion water invaded lower part fin in the course of the work, is equipped with the breakwater blowing hole pipe lower part, leak inside the comdenstion water inflow boiler in both can preventing, leak the comdenstion water entering drain pipe in being favorable to the guide again. However, the design needs to be modified greatly, including installing the measuring point additionally, installing the breakwater additionally, and the drain pipe is required to be arranged in the wall body, which is not beneficial to popularization and application.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a water chute structure for avoiding the tube explosion of the heating surface of a boiler in order to overcome the defects of the prior art.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a avoid guiding gutter structure of boiler heating surface booster, includes guiding gutter and drainage plate, and the guiding gutter is installed on the fin of through-wall sleeve pipe lower extreme, and the drainage plate is the arc structure, radian and through-wall sleeve pipe lower limb adaptation, and the guiding gutter is the groove box structure, and the guiding gutter passes through the drainage plate and links to each other with through-wall sleeve pipe's export, and the comdenstion water that produces in the steam soot blower barrel flows along through-wall sleeve pipe, trickles through the drainage plate and sprays on the guiding gutter.
Preferably, the two sides of the water chute are provided with radians which are adaptive to the size of the wall wrapping heating surface pipe.
Preferably, the water chute comprises a plate surface and arc edges inclined at two sides of the plate surface, an angle reserved between the arc edges and the plate surface is matched with the size of the heated surface pipe of the wrapping wall, and the arc edges at two sides are flush with the transverse highest point of the heated surface pipe.
Preferably, a plurality of mounting holes for bolt connection are formed in the water guide groove, corresponding through holes are formed in the wrapping wall, and the water guide groove is mounted on the fin through bolts and nuts.
Preferably, the mounting holes are uniformly arranged along the longitudinal direction of the water chute.
Preferably, a plurality of throttling cross channels for slow flow are arranged on the water chute.
Preferably, the throttling cross channel is densely and sparsely arranged along the longitudinal direction of the water chute.
Preferably, the drainage plate is of a semi-arc structure.
Preferably, the water chute is a water chute of a tank box structure made of TP347 material.
Preferably, a connecting port is formed in the lower opening of the drainage plate, and the shape of the connecting port is matched with the upper end face of the water chute.
Preferably, the upper opening of the drainage plate is fully welded with the lower edge of the wall bushing, and the lower opening of the drainage plate is fully welded with the upper edge of the water guide groove.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) The water guide grooves are arranged on the fins at the lower end of the wall-penetrating sleeve and are connected with the outlet of the wall-penetrating sleeve through the drainage plate, condensed water generated in the barrel of the steam soot blower flows out along the wall-penetrating sleeve and is sprayed on the water guide grooves in a flowing manner through the drainage plate, the condensed water is dried on the water guide grooves in time, and the condensed water cannot be in direct contact with the sealing fins of the furnace wall, so that the fins are prevented from generating cracks due to repeated cold and heat alternation, and the phenomenon that the heated surface tube bursts and leaks due to crack extension is avoided.
(2) The two sides of the water chute are provided with radians which are adaptive to the size of the wall-wrapping heated surface pipe, and the arc edges of the two sides are basically flush with the transverse highest point of the heated surface pipe, so that a flue gas corridor formed on the leeward side of the furnace pipe due to the additional arrangement of the water chute can be avoided.
(3) The water guide groove can be made of TP347 materials or other materials with strong long-term cold and hot alternation resistance, and replaces furnace wall fins to carry out the cold and hot alternation process.
(4) The water guide groove and the fins are fixed through bolts, a flexible variable is reserved, the problem of dissimilar steel desoldering can be effectively avoided, the water guide groove is arranged on the fins and is not directly welded with the heating surface pipe, the possibility that tensile strain of the water guide groove is transmitted to the heating surface pipe is eliminated, the mounting holes can be uniformly arranged along the longitudinal direction of the water guide groove, and the water guide groove can be firmly arranged on the fins to avoid falling, deformation and displacement.
(5) The water guide groove is provided with a plurality of throttling cross channels for slow flow, so that the water guide groove has a slow flow function, the throttling cross channels can be densely and sparsely arranged along the longitudinal direction of the water guide groove, and the condensed water is fully dried on the water guide groove.
(6) The drainage plate is of a semi-circular arc structure and has the function of a drainage funnel, a connector is arranged at the lower opening of the drainage plate, and the shape of the connector is matched with the upper end face of the water guide groove, so that condensed water can smoothly flow.
Drawings
FIG. 1 is an exploded view of the present invention;
fig. 2 is an isometric view of the present invention;
fig. 3 is a front view of the present invention;
FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;
reference numerals are as follows:
1. the water guide groove comprises a water guide groove body 2, a drainage plate 3, a wall penetrating sleeve 4, a wrapping wall 5, a heated surface pipe 6, a plate surface 7, an arc edge 8, a mounting hole 9, a through hole 10, a bolt 11, a nut 12 and a throttling cross channel.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
In the drawings, elements that are structurally identical are represented by like reference numerals, and elements that are structurally or functionally similar in each instance are represented by like reference numerals. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. In the drawings, components have been exaggerated in places where appropriate for clarity of illustration.
Example 1:
aiming at the leakage event of the side-cladding wall heating surface pipe of the unit, the inventor finds out the following main factors from the leakage reason analysis: the wall bushing 3 penetrates through a heat insulation layer and fins of a wrapping wall 4 (the heat receiving surface tubes 5 are connected by the fins, the heat insulation layer and the fins are not shown in the figure), an outlet of the wall bushing 3 is communicated into a boiler, a moving barrel of a steam soot blower is arranged in the wall bushing 3, condensed water generated in the barrel of the steam soot blower flows into the wall bushing 3 along a nozzle and then flows out along the wall bushing 3 to be sprayed and flowed on the fins near the heat receiving surface tubes 5 of the wrapping wall 4, the fins generate cracks through repeated cold and heat alternation, the cracks extend to damage the heat receiving surface tubes 5, and accordingly the heat receiving surface tubes 5 are leaked, and the secondary reason is that the fin material (12 Cr1 MoV) has relatively poor alternating stress resistance and is relatively easy to generate cracks;
the TP347 material has strong long-term cold and heat alternation resistance, but if the fins are directly replaced by the TP347 material fins, the practical problems of inconsistent expansion coefficients of the heated surface tubes 5, welding of dissimilar steel and the like can be caused, the cost is high, the consumed time is long, and the boiler needs to be transformed in a large range.
In order to solve the problems, the water guide groove structure for avoiding tube explosion on the heating surface of the boiler is provided, as shown in fig. 1 to 4, the water guide groove structure comprises a water guide groove 1 and a drainage plate 2, the water guide groove 1 is installed on a fin at the lower end of a wall bushing 3, the drainage plate 2 is of an arc-shaped structure, the radian of the drainage plate is matched with the lower edge of the wall bushing 3, the water guide groove 1 is of a groove box structure, the water guide groove 1 is connected with an outlet of the wall bushing 3 through the drainage plate 2, and condensed water generated in a barrel of a steam soot blower flows out along the wall bushing 3 and is sprayed on the water guide groove 1 in a flowing mode through the drainage plate 2. When the water chute 1 is designed, the approximate drying and evaporation rates of condensed water can be calculated according to the distribution of the tail flue temperature field by combining with the actual field measurement data, and then the length of the water chute 1 is determined.
Use the utility model discloses afterwards, the comdenstion water that produces when the comdenstion water that steam soot blower started the initial stage and produced, operation and outage all can spray and trickle on guiding gutter 1, and the comdenstion water is in time dried on guiding gutter 1, and the comdenstion water can not with the sealed fin direct contact of furnace wall to prevent that fin from relapseing cold and hot alternation and producing the crackle, avoid the crackle to extend and lead to being heated 5 blast pipes and leak.
The further structural features of the present invention are described as follows:
1. in order to avoid the formation of a flue gas corridor on the leeward side of the furnace tube caused by additionally arranging the water chute 1, the two sides of the water chute 1 are provided with radians which are adaptive to the size of the heating surface tube 5 of the packet wall 4. In this embodiment, as shown in fig. 4, the guiding gutter 1 of the trough box structure includes the arc edges 7 that face 6 and face 6 both sides slope, and the angle that leaves between arc edge 7 and face 6 suits with the package wall 4 heated surface pipe 5 size, and this application strict control guiding gutter 1's radian, the arc edges 7 of both sides are basically parallel and level with the horizontal peak of heated surface pipe 5, avoid the boiler tube lee side to form the flue gas corridor.
2. The water chute 1 can be made of TP347 materials or other materials with strong long-term cold and hot alternation resistance, and the characteristic of strong cold and hot alternation resistance of the stainless steel water chute 1 is utilized to replace furnace wall fins to carry out a cold and hot alternation process, so that condensed water cannot contact the heating surface sealing fins of the ladle wall 4, and cracks of the furnace wall fins are prevented from being generated and extending to the side ladle wall 4 tubes.
3. A plurality of mounting holes 8 for connecting bolts 10 are formed in the water chute 1, corresponding through holes 9 are formed in the wrapping wall 4, and the water chute 1 is mounted on the fins through the bolts 10 and nuts 11. The water chute 1 and the fins are fixed through the bolts 10, flexibility variables are reserved, the problem of dissimilar steel desoldering can be effectively avoided, the water chute 1 and the heated surface pipe 5 are not directly welded, and the possibility that tensile strain of the water chute 1 is transmitted to the heated surface pipe 5 is eliminated. The mounting holes 8 can be uniformly arranged along the longitudinal direction of the water chute 1, so that the water chute 1 can be firmly mounted on the fins to avoid falling, deformation and displacement.
4. Be equipped with a plurality of throttle cross courses 12 that are used for the slow flow on guiding gutter 1 for guiding gutter 1 has the slow flow function, and this application adds welding throttle cross course 12 on the face 6 of guiding gutter 1, considers rivers top-down, and throttle cross course 12 can be arranged by close and sparse along the vertical of guiding gutter 1, guarantees that the comdenstion water fully dries on guiding gutter 1.
5. As shown in fig. 1, the drainage plate 2 is a semi-arc structure and has the function of a drainage funnel, and condensed water generated in a barrel of the steam soot blower flows out along the wall bushing 3 and is gathered by the drainage plate 2 to flow into the water chute 1; the end opening of drainage plate 2 has the connector, the shape of connector and the up end adaptation of guiding gutter 1, and the end opening of drainage plate 2 and wall bushing 3's lower bead full weld, and the end opening of drainage plate 2 and the last bead full weld of guiding gutter 1 guarantee that the comdenstion water can smoothly flow.
This application need not reform transform steam soot blower, package wall 4, fin and heating surface pipe 5 on a large scale, only need in the wall bushing 3 below install drainage plate 2 and guiding gutter 1 additional can, it is little to reform transform the work load, easily popularizes and applies.
Taking the R18 pipe burst rush repair of the #2 furnace of the turnip lake power plant as an example, the start and stop cost of the unit exceeds 100 ten thousand, the loss of rush repair materials and construction cost is about 10 ten thousand, and the loss of power generation and the loss of scheduling and checking are also included. By applying the application, after the water chute 1 is additionally arranged and runs for a period, the site is reexamined: the fins of the wall covering 4 which are additionally provided with the water chute 1 have no crack sign, so that the hidden danger of crack defects is eliminated; the material specification and the fixing mode of the water chute 1 achieve the expected effect, the conditions of falling, deformation, displacement and the like do not occur on the appearance, the facility is firm and reliable, and certain stability is achieved; due to the punching measure adopted by additionally arranging the water chute 1 on the fins, the holes are smooth and tidy, and no crack hidden trouble occurs. The improvement measure effectively eliminates the hidden danger of the cracks of the fins of the wrapping wall 4 by combining the actual on-site reexamination condition, and avoids the leakage of the heated surface pipe 5 of the wrapping wall 4 and the non-stop accidents of the unit. The initial estimation and the implementation of the technical improvement reduce one-time non-stop accidents by at least more than 150 ten thousand of economic losses.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a avoid guiding gutter structure of boiler heating surface booster, a serial communication port, including guiding gutter and drainage plate, the guiding gutter is installed on the fin of wall bushing lower extreme, and the drainage plate is the arc structure, radian and wall bushing are along the adaptation down, and the guiding gutter is the groove box structure, and the guiding gutter passes through the drainage plate and links to each other with wall bushing's export, and the comdenstion water that produces in the steam soot blower barrel flows along the wall bushing, trickles through the drainage plate and sprays on the guiding gutter.
2. The water chute structure for preventing the heated surface of the boiler from tube explosion as claimed in claim 1, wherein the two sides of the water chute are provided with radians corresponding to the size of the wall-wrapped heated surface tube.
3. The structure of water chute for preventing the heated surface of boiler from tube explosion as claimed in claim 2, wherein the water chute comprises a plate surface and two inclined arc edges at two sides of the plate surface, the angle between the arc edges and the plate surface is adapted to the size of the heated surface tube of the enclosure, and the arc edges at two sides are flush with the highest transverse point of the heated surface tube.
4. The water chute structure for preventing the heating surface of the boiler from tube explosion as claimed in claim 1, wherein a plurality of mounting holes for bolt connection are formed on the water chute, corresponding through holes are formed on the wrapping wall, and the water chute is mounted on the fin through bolts and nuts.
5. The structure of a water guide chute for preventing the heating surface of a boiler from being exploded as claimed in claim 4, wherein the mounting holes are uniformly arranged along the longitudinal direction of the water guide chute.
6. The water chute structure for preventing the tube explosion of the heating surface of the boiler as claimed in claim 1, wherein a plurality of throttling cross-channels for slow flow are arranged on the water chute.
7. The water chute structure for avoiding the tube explosion of the heating surface of the boiler as claimed in claim 6, wherein the throttling cross-channels are densely and sparsely arranged along the longitudinal direction of the water chute.
8. The water chute structure for avoiding the tube explosion of the heating surface of the boiler as claimed in claim 1, wherein the flow guiding plate is of a semi-arc structure.
9. The water chute structure for avoiding the tube explosion on the heating surface of the boiler as claimed in claim 1, wherein the water chute is a water chute of a tank box structure made of TP347 material.
10. The water chute structure for avoiding the tube explosion of the heating surface of the boiler as claimed in claim 1, wherein the lower opening of the flow guiding plate is provided with a connecting port, and the shape of the connecting port is matched with the upper end surface of the water chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221424442.5U CN217763494U (en) | 2022-06-08 | 2022-06-08 | Water guide groove structure for preventing tube explosion of boiler heating surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221424442.5U CN217763494U (en) | 2022-06-08 | 2022-06-08 | Water guide groove structure for preventing tube explosion of boiler heating surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217763494U true CN217763494U (en) | 2022-11-08 |
Family
ID=83891542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221424442.5U Expired - Fee Related CN217763494U (en) | 2022-06-08 | 2022-06-08 | Water guide groove structure for preventing tube explosion of boiler heating surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217763494U (en) |
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2022
- 2022-06-08 CN CN202221424442.5U patent/CN217763494U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221108 |