CN201697122U - Expansion joint - Google Patents
Expansion joint Download PDFInfo
- Publication number
- CN201697122U CN201697122U CN201020223361XU CN201020223361U CN201697122U CN 201697122 U CN201697122 U CN 201697122U CN 201020223361X U CN201020223361X U CN 201020223361XU CN 201020223361 U CN201020223361 U CN 201020223361U CN 201697122 U CN201697122 U CN 201697122U
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- cover plate
- expansion joint
- scum pipe
- box
- seal box
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Abstract
An embodiment of the utility model aims to provide an expansion joint preventing leakage of ash residue. The expansion joint comprises a residue feeding hopper, a sealing case and a cover plate component. The sealing case includes a sealing cover plate and a sealing box which are fixedly connected, the cover plate component includes a press cover, a filling case and a movable cover plate which are sequentially fixed from top to bottom, and the movable cover plate is positioned inside the sealing box and below the sealing cover plate. A residue discharge pipe perpendicularly penetrating through the cover plate component is inserted into the residue feeding hopper, the bottom of the residue feeding hopper is fixedly connected with a feeding end of a residue cooling machine, the outer surface of the residue feeding hopper is fixedly connected with the sealing box, and the top end of the residue feeding hopper positioned inside the sealing box contacts with the movable cover plate. The movable cover plate can horizontally move relatively to the sealing cover plate, and high-temperature resistant fillers are arranged between the movable cover plate and the sealing cover plate. When the expansion joint works, a gap is horizontally arranged between the residue discharge pipe and an optional component of the cover plate, the high-temperature resistant fillers are arranged in the gap between the filling case and the residue discharge pipe, and a gap is horizontally arranged between the sealing cover plate and the filling case.
Description
Technical field
The utility model relates to expansion joint.
Background technology
The used CFBB of steam power plant by scum pipe to cold slag machine deslagging.Because boiler may be that axially (being vertical direction) expansion also may be that radially (being horizontal direction) expands opening, stop that the one above-mentioned expansion of very big thermal expansion amount is arranged in the process, perhaps the two has concurrently, and cold slag machine is immovable, so on the deslagging pipeline section, must installation can realize that scum pipe moves axially, can realize the mechanism that it moves horizontally again, be separated to avoid scum pipe and cold slag machine.
At present, can adopt plug-in type dreg-inlet hopper structure to realize flexible connection between scum pipe and the cold slag machine: referring to Fig. 1, between scum pipe 1 and cold slag machine (Fig. 1 does not show), be provided with removable cover 2 and dreg-inlet hopper 3, wherein, scum pipe 1 vertically passes removable cover 2 and inserts in the dreg-inlet hopper 3, and dreg-inlet hopper 3 is connected with the feed end of cold slag machine.There is the gap between scum pipe 1 and the removable cover 2, thereby scum pipe 1 can move up and down with respect to dreg-inlet hopper 3, to adapt to the axial expansion of boiler, in addition, removable cover 2 contacts with the top of dreg-inlet hopper 3 and can move horizontally, to adapt to being radially expanded of boiler.
Yet when implementing the invention, the inventor finds, when work, for guaranteeing the flexible connection between scum pipe 1 and the cold slag machine, all there is the gap between scum pipe 1 and the removable cover 2 and between removable cover 2 and the dreg-inlet hopper 3, and lime-ash can leak from above-mentioned gap, site environment and safety in production is caused have a strong impact on.
The utility model content
In view of this, the utility model embodiment purpose is to provide a kind of expansion joint that prevents that lime-ash from revealing.
To achieve these goals, the utility model embodiment provides following scheme:
A kind of expansion joint, be used to connect scum pipe and cold slag machine, comprise dreg-inlet hopper, seal box and cover plate assembly, described seal box comprises fixedly connected seal cover board and seal box, described cover plate assembly comprises fixedly connected in turn from top to bottom gland, stuffing box and removable cover, wherein:
Described scum pipe vertically passes described cover plate assembly and inserts in the described dreg-inlet hopper;
Fixedly connected with the feed end of described cold slag machine in the bottom of described dreg-inlet hopper, the outer surface of described dreg-inlet hopper is fixedlyed connected with described seal box, and its top is positioned at described seal box and contacts with described removable cover;
Described removable cover is positioned at the below of described seal box and described seal cover board, and can move horizontally with respect to described seal cover board, is provided with high temperature resistant filler between described removable cover and described seal cover board;
When work, all there is the gap between arbitrary parts of described scum pipe and described cover plate assembly in the horizontal direction, the gap location of described stuffing box and described scum pipe is provided with high temperature resistant filler, has the gap in the horizontal direction between described seal cover board and the described stuffing box.
Preferably, described removable cover is provided with the packing groove of laying described high temperature resistant filler.
Preferably, described removable cover is provided with first sleeve, and described first sleeve and described seal box form labyrinth structure.
Preferably, be provided with second sleeve in the described seal box.
Preferably, be filled with high temperature resistant filler in the described seal box.
From above-mentioned technical scheme as can be seen, in the utility model embodiment owing to all have the gap in the horizontal direction between arbitrary parts of scum pipe and above-mentioned cover plate assembly, thus scum pipe can be in dreg-inlet hopper moving axially along boiler.Because the gap location of stuffing box and scum pipe is provided with high temperature resistant filler, after lime-ash leaks out from the gap of scum pipe and removable cover, can be held back by above-mentioned high temperature resistant filler, thereby both can guarantee moving up and down of scum pipe again, can avoid lime-ash to reveal again; Removable cover is positioned at the below of described seal box, seal cover board, and can move horizontally with respect to seal cover board, and when boiler temperature raise, this structure can make scum pipe move horizontally.After lime-ash leaks out from the crack on the top of removable cover and dreg-inlet hopper, can hold back by sealed box, in addition, the high temperature resistant filler between removable cover and seal cover board can prevent further that lime-ash from revealing away from the gap of removable cover and seal cover board.Also be expansion joint that the utility model embodiment is provided both can guarantee scum pipe vertically and horizontal movement, can prevent that again lime-ash from revealing.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of existing plug-in type dreg-inlet hopper;
The expansion joint structural representation that Fig. 2 provides for the utility model embodiment;
Another structural representation of expansion joint that Fig. 3 provides for the utility model embodiment;
The working state schematic representation of expansion joint each parts when boiler is worked that Fig. 4 provides for the utility model embodiment;
The another structural representation of expansion joint that Fig. 5 provides for the utility model embodiment.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The used CFBB of steam power plant is a kind of low pollution, environment-friendly type, clean burning boiler, it adopts stove internal combustion sulfur removal technology, realize effectively removing of sulfide and nitrogen oxide by the recirculating fluidized bed low-temperature burning, thereby can greatly reduce the discharging of pollutant in the flue gas.
Because boiler opening, stopping that very big thermal expansion amount is arranged in the process-above-mentioned expansion may be axially (being vertical direction) to expand also may be that radially (being horizontal direction) expands, perhaps the two has concurrently, and cold slag machine is immovable, so on the deslagging pipeline section, must installation can realize that scum pipe moves axially, can realize the mechanism that it moves horizontally again, be separated to avoid scum pipe and cold slag machine.
Before address, existing plug-in type dreg-inlet hopper structure as shown in Figure 1 is because between scum pipe 1 and the removable cover 2 and all have the gap between removable cover 2 and the dreg-inlet hopper 3, lime-ash can leak from above-mentioned gap.And the temperature of the lime-ash of just having discharged is generally all about 900 ℃, be scattering on every side on maintainer or other equipment as it can cause casualties, equipment fault, have a strong impact on thereby site environment and safety in production caused.
For addressing the above problem, referring to Fig. 2, the utility model embodiment provides a kind of expansion joint that prevents that lime-ash from revealing, this used for expansion joint is in connecting scum pipe 1 and cold slag machine (not shown in Fig. 2), its structure comprises dreg-inlet hopper 3, seal box and cover plate assembly, above-mentioned seal box comprises fixedly connected seal cover board 4 and seal box 5, and above-mentioned cover plate assembly comprises fixedly connected in turn from top to bottom gland 6, stuffing box 7 and removable cover 2, wherein:
Fixedly connected with the feed end of cold slag machine by flange 31 in the bottom of dreg-inlet hopper 3, its outer surface is fixedlyed connected with seal box 5, and its top is positioned at seal box 5 and contacts with removable cover 2;
When work, all there is the gap between arbitrary parts of scum pipe 1 and above-mentioned cover plate assembly in the horizontal direction, stuffing box 7 is provided with high temperature resistant filler 82 with the gap location of scum pipe 1, and can promote gland 6 by fastening bolt group 71 and compress high temperature resistant filler 82 to improve its sealing property, also there is the gap between seal cover board 4 and the stuffing box 7 in the horizontal direction, and match with seal box 5 and removable cover 2 and determine the maximum horizontal displacement of scum pipe 1 in this gap, those skilled in the art should be noted that above-mentioned maximum horizontal displacement should be less than the maximum horizontal swell increment of boiler when designing.
As seen, owing to all have the gap in the horizontal direction between arbitrary parts of scum pipe 1 and above-mentioned cover plate assembly, therefore scum pipe 1 can be in dreg-inlet hopper 3 moving axially along boiler, and stuffing box 7 is provided with high temperature resistant filler 82 with the gap location of scum pipe 1, after lime-ash leaks out from the gap of scum pipe 1 and removable cover 2, can be held back by high temperature resistant filler 82, thereby can when guaranteeing scum pipe 1 vertical motion, avoid lime-ash to reveal; Removable cover 2 is positioned at the below of described seal box 5, seal cover board 4, and can be with respect to moving horizontally with seal cover board 4, and this structure can guarantee that scum pipe 1 moves horizontally.After lime-ash leaks out from the gap location on removable cover 2 and the top of dreg-inlet hopper 3, can hold back by sealed box 5, in addition, high temperature resistant filler 81 can prevent further that lime-ash from revealing away from the gap of removable cover 2 and seal cover board 4.Also be expansion joint that the utility model embodiment is provided both can guarantee scum pipe 1 vertically and horizontal movement, can realize movable sealing with scum pipe 1 again, prevent that lime-ash from revealing.
It should be noted that in the utility model no matter boiler opens, whether stops, all need have the gap in the horizontal direction between arbitrary parts of scum pipe 1 and above-mentioned cover plate assembly.Consider at variations in temperature lower dreg discharging pipe 1 and self certain swell increment is arranged also, when design, enough gaps should be kept between (when boiler is not worked) and the scum pipe 1 when each parts of cover plate assembly are in cold conditions, after being radially expanded, vertical motion can't be made to prevent scum pipe 1.
In other embodiment of the utility model, still see also Fig. 2, the packing groove 21 of laying high temperature resistant filler 81 can be set on the removable cover 2.Certainly, also filler 81 directly can be positioned between removable cover 2 and the seal cover board 4, or it is bonded on the seal cover board 4, can realize sealing function equally.Those skilled in the art can utilize prior art to carry out flexible design on this basis, do not give unnecessary details at this.
Above-mentioned high temperature resistant filler 81 and 82 specifically can be nickel wire packing, ceramic fibre cotton, aluminium silicate wool or rock wool etc.
In other embodiment of the utility model, referring to Fig. 3, sleeve 22 can be set on the removable cover 2 form labyrinth structure with seal box 5, the quantity of sleeve 22 can be a plurality of.Certainly, in other embodiments, also sleeve 51 can be set in the seal box 5, the quantity of sleeve 51 also can be a plurality of.Sleeve 22 and sleeve 51 perhaps can be set simultaneously, and sleeve 22 cooperatively interacts with sleeve 51 also can form labyrinth structure.Above-mentioned labyrinth structure has increased stroke and the advance difficulty of lime-ash in seal box 5, can further improve sealing.When sleeve 22 is set at the same time with sleeve 51, sleeve 22 or sleeve 51 may impact the maximum horizontal displacement of scum pipe 1, therefore, those skilled in the art need guarantee that the maximum horizontal displacement of scum pipe 1 is not less than the maximum horizontal swell increment of boiler, does not give unnecessary details at this when design.
Fig. 4 shows the duty of above-mentioned expansion joint each parts when boiler is worked, wherein, and dotted line 11 expression scum pipe 1 its axis positions when being in cold conditions, and dotted line 12 is when being illustrated in boiler work, the axis position of scum pipe 1; Y represents the cold conditions insertion amount of scum pipe 1, the T energy-conservation satisfied maximum axial swell increment of representing to expand, the S energy-conservation satisfied maximum radial swell increment of representing to expand.
It is to be noted, the foregoing description is the preferred embodiment that the utility model is introduced, those skilled in the art on this basis, can design more embodiment fully, for example, among above-mentioned all embodiment, all can fill high temperature resistant filler in the seal box 5, its material can be nickel wire packing, ceramic fibre cotton, aluminium silicate wool or rock wool etc., and is advisable with the bigger material of deformation behavior.Seal cover board 4 and seal box 5 can be one-body molded or be bolted to connection, and when using bolting to connect, referring to Fig. 5, asbestos rubber cushion 52 can be set between seal cover board 4 and the seal box 5 reveal to prevent lime-ash.In addition, removable cover 2 also can be fixedlyed connected or the like by welding or integrated mode with stuffing box 7.Give unnecessary details no longer one by one at this.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (5)
1. expansion joint, be used to connect scum pipe and cold slag machine, it is characterized in that, comprise dreg-inlet hopper, seal box and cover plate assembly, described seal box comprises fixedly connected seal cover board and seal box, described cover plate assembly comprises fixedly connected in turn from top to bottom gland, stuffing box and removable cover, wherein:
Described scum pipe vertically passes described cover plate assembly and inserts in the described dreg-inlet hopper;
Fixedly connected with the feed end of described cold slag machine in the bottom of described dreg-inlet hopper, the outer surface of described dreg-inlet hopper is fixedlyed connected with described seal box, and its top is positioned at described seal box and contacts with described removable cover;
Described removable cover is positioned at the below of described seal box and described seal cover board, and can move horizontally with respect to described seal cover board, is provided with high temperature resistant filler between described removable cover and described seal cover board;
When work, all there is the gap between arbitrary parts of described scum pipe and described cover plate assembly in the horizontal direction, the gap location of described stuffing box and described scum pipe is provided with high temperature resistant filler, has the gap in the horizontal direction between described seal cover board and the described stuffing box.
2. expansion joint as claimed in claim 1 is characterized in that described removable cover is provided with the packing groove of laying described high temperature resistant filler.
3. expansion joint as claimed in claim 2 is characterized in that described removable cover is provided with first sleeve, and described first sleeve and described seal box form labyrinth structure.
4. expansion joint as claimed in claim 2 is characterized in that, is provided with second sleeve in the described seal box.
5. as each described expansion joint of claim 1-4, it is characterized in that, be filled with high temperature resistant filler in the described seal box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020223361XU CN201697122U (en) | 2010-06-04 | 2010-06-04 | Expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020223361XU CN201697122U (en) | 2010-06-04 | 2010-06-04 | Expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201697122U true CN201697122U (en) | 2011-01-05 |
Family
ID=43398368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020223361XU Expired - Fee Related CN201697122U (en) | 2010-06-04 | 2010-06-04 | Expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201697122U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230560A (en) * | 2011-06-21 | 2011-11-02 | 江苏远通波纹管有限公司 | Slag-dropping pipe expansion joint |
| CN104807332A (en) * | 2014-01-27 | 2015-07-29 | 包头市山晟新能源有限责任公司 | High-temperature slag sealing device |
| CN105065672A (en) * | 2015-07-08 | 2015-11-18 | 山东立人能源科技有限公司 | Revolution gas retort sealing device |
| CN105299636A (en) * | 2014-05-27 | 2016-02-03 | 国网山西省电力公司电力科学研究院 | High-temperature three-dimensional expansion joint |
| CN111503401A (en) * | 2020-05-25 | 2020-08-07 | 江苏迪威高压科技股份有限公司 | High-pressure stainless steel quick connector valve body assembly |
| CN112513506A (en) * | 2018-04-05 | 2021-03-16 | 巴西石油公司 | Expansion joint |
-
2010
- 2010-06-04 CN CN201020223361XU patent/CN201697122U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230560B (en) * | 2011-06-21 | 2012-12-19 | 江苏远通波纹管有限公司 | Slag-dropping pipe expansion joint |
| CN102230560A (en) * | 2011-06-21 | 2011-11-02 | 江苏远通波纹管有限公司 | Slag-dropping pipe expansion joint |
| CN104807332A (en) * | 2014-01-27 | 2015-07-29 | 包头市山晟新能源有限责任公司 | High-temperature slag sealing device |
| CN105299636B (en) * | 2014-05-27 | 2017-08-29 | 国网山西省电力公司电力科学研究院 | High-temperature three-dimensional expansion joint |
| CN105299636A (en) * | 2014-05-27 | 2016-02-03 | 国网山西省电力公司电力科学研究院 | High-temperature three-dimensional expansion joint |
| CN105065672A (en) * | 2015-07-08 | 2015-11-18 | 山东立人能源科技有限公司 | Revolution gas retort sealing device |
| CN105065672B (en) * | 2015-07-08 | 2016-08-17 | 朱绍辉 | A kind of rotary dry distillation stove sealing device |
| CN112513506A (en) * | 2018-04-05 | 2021-03-16 | 巴西石油公司 | Expansion joint |
| US20210148497A1 (en) * | 2018-04-05 | 2021-05-20 | Petroleo Brasileiro S.A. - Petrobras | Telescopic joint |
| JP2021520427A (en) * | 2018-04-05 | 2021-08-19 | ペトロレオ ブラジレイロ ソシエダ アノニマ − ペトロブラス | Expansion joints |
| JP7273843B2 (en) | 2018-04-05 | 2023-05-15 | ペトロレオ ブラジレイロ ソシエダ アノニマ － ペトロブラス | Expansion joints |
| US12025249B2 (en) * | 2018-04-05 | 2024-07-02 | Petroleo Brasileiro S.A.-Petrobras | Telescopic joint |
| CN111503401A (en) * | 2020-05-25 | 2020-08-07 | 江苏迪威高压科技股份有限公司 | High-pressure stainless steel quick connector valve body assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20110604 |