CN104406154A - Furnace top leakproof sealing technology with multi-directional stress absorbing function - Google Patents
Furnace top leakproof sealing technology with multi-directional stress absorbing function Download PDFInfo
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- CN104406154A CN104406154A CN201410681417.9A CN201410681417A CN104406154A CN 104406154 A CN104406154 A CN 104406154A CN 201410681417 A CN201410681417 A CN 201410681417A CN 104406154 A CN104406154 A CN 104406154A
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- tube panel
- furnace roof
- buffer layer
- fiber cotton
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Abstract
The invention relates to a furnace top leakproof sealing technology with a multi-directional stress absorbing function. A main body is composed of a fiber cotton blanket, a nickel chromium manganese soft net, a stainless steel diamond-shaped steel net, a limit fixing component, a high-temperature adhesive and a fire-resistant castable, and is composed of a sealing base layer, a first flexible buffer layer, a second flexible buffer layer, a flexible buffer strengthened layer and a flexible sealing substrate of a shell protecting layer which are arranged in sequence in a pasting manner; the layers are arranged at an intersection part of a vertical pipeline or a tube panel and a horizontal pipeline or a tube panel and arranged at the part of a connecting corner, where a displacement stress is complicated and a secondary leaking point is easy to occur, of the main body and a furnace top in a skin type dislocation layered bonding manner; the displacement stress in any direction generated at the intersection part can be absorbed and buffered; the heat and smoke probably initiated by the secondary leaking point in a wrapping range are prevented from sending out; the difficult problems of poor working reliability and short service life of traditional sealing components used at a part where the stress is complicated are solved; high practicability is realized.
Description
Technical field
The present invention relates to boiler seal technical field, particularly a kind of have the furnace roof leakproof seal technology absorbing multi-faceted stress function.
Background technology
Coal-burning boiler in thermal power plant take all coal as fuel, utilizes with different azimuth arrangement, passes through the numerous metal water steam pipe road outward supplying heats absorbing heat in combustion chamber be arranged on boiler top.In the mounted state, inevitably certain interval is there is between the corresponding mounting hole on metallic conduit and furnace roof, and all can expand with heat and contract with cold with the heating and cooling of boiler in the course of the work, produce relative shift stress, the sealer making to be blocked in gap loosens or distortion, air gap periphery furnace roof is cracked or gap, affects the integral sealing effect of boiler.At present, the hard sealing blocking asbestos exotic material or casting cement in gap is generally adopted when constructing, the method of the soft containment member that gluing laying is made up of multilayer aluminium silicate wool and steel mesh on relevant position, furnace roof appearance junction, with strengthen stoping in stove be entrained with cigarette ash high-temperature flue gas under pressure reduction orders about to external leakage, for a large amount of energy loss and the energy waste that reduce boiler, avoid the intensification of surrounding environment and the increase of dust in air and the environmental pollution caused, and the ash disposal workload reduced when furnace roof dust stratification amount is normally keeped in repair with minimizing boiler all has remarkable result.But find in practice, the method arranging soft or hard combination seal layer used at present belongs to rigid containment expansion fashion, only there is the function absorbing synchronous shift stress in the same way, to single or many in a row the neat metallic conduit junctions arranged be sealed with good leakproof effect, but be difficult to each transition of the stretching to the inconsistent displacement stress demand meeting the complicated junction generation of such as vertical tube plates and horizontal tube panel furnace roof arranged in a crossed manner, therefore, often new trickle air gap or crack can be produced in the course of the work, become the secondary leak point of heat and cigarette ash, thus affect the overall sealing performance of boiler, thus generally have must every 2 for existing boiler of power plant, within 3 years, once clear up furnace roof, upgrade the maintenance requirement of SLD, cause ordinary maintenance pressure larger, maintaining cost is higher.So existing boiler top leakproof seal technology exists that structure is owed rationally, work applicable surface is limited generally, effectively can not meet the comprehensive sealing life requirements of boiler, consider all to owe desirable from economy and point of view of practicability.
Summary of the invention
The object of the invention is to overcome the deficiency existing for existing boiler top leakproof seal technology, provide a kind of and can the handing-over position that secondary leakage point likely occurs completely reliably is wrapped in sealant, there is the furnace roof leakproof seal technology absorbing multi-faceted stress function.
Of the present invention have the furnace roof leakproof seal technology absorbing multi-faceted stress function and mainly comprise flexible sealing matrix and method to set up thereof, it is characterized in that described flexible sealing substrate adhesive is arranged on displacement stress more complicated, the vertical pipe of easy generation secondary leakage or tube panel and horizontal pipe or tube panel infall and join in the rated range around corner with furnace roof, there is all clean rigidity matrix surfaces in comprehensive parcel rated range, and the function of skin formula bonding can be produced with it, include by fiber cotton blanket, the soft net of Ni-Cr-Mn, stainless steel rhombus steel mesh, spacing fixation kit, the sealing basal layer that high-temperature adhesives and castable refractory are formed, first supple buffer layer, second supple buffer layer, flexible buffer enhancement Layer and shell protective layer, wherein:
Described cellucotton mat is thick is 15-25 millimeter, include be longer than pipe circumference length fiber cotton blanket bar, wider than spacing between pipes fiber cotton blanket stick and with the specified parcel height on pipeline or length be radius, arc range is the large size arc cellucotton mat of 240 °-360 °, the arc cellucotton mat of medium size arc cellucotton mat and small size several different arcwall face specifications of arc cellucotton mat;
Described spacing fixation kit includes the Limit screw of band pawl, pressure holding steel disc, steel loop and check sheet;
Method to set up is as follows: (1) vertical pipe or tube panel and horizontal pipe or tube panel infall and with furnace roof join to demarcate flexible sealing matrix around corner scope is set, (2) on the furnace roof in calibration range, vertical pipe and horizontal pipe, vertical welding arranges some Limit screws, (3) enclose sticky filling out in every root pipeline and furnace roof junction with described high-temperature adhesives to establish described fiber cotton blanket bar, superpose with described high-temperature adhesives on the surface at the furnace roof of each pipeline enclosure of vertical pipe or tube panel and horizontal pipe or tube panel and stickyly establish some fiber cotton blanket sticks, form and seal basal layer, (4) the spacing stickup of central part of described small size arc cellucotton mat is arranged on adjacent described vertical pipe or tube panel and horizontal pipe or tube panel and furnace roof intersect corner furnace roof on the surface, and both sides cambered surface is extended respectively, parcel is sticky to be located on sealing basal layer on vertical pipe or tube panel and horizontal pipe or tube panel and pipeline external surface, and fill up as required and add sticky some fiber cotton blanket sticks, make the infall of vertical pipe or tube panel and horizontal pipe or tube panel and with the junction of furnace roof around be all in the complete parcel of small size arc fiber cotton blanket and fiber cotton blanket stick, the soft net of one deck Ni-Cr-Mn is covered again at upper parcel, form the first supple buffer layer, (5) in the first supple buffer layer, dislocation parcel is sticky establishes medium size arc cellucotton mat and some fiber cotton blanket sticks, then covers the soft net of one deck Ni-Cr-Mn at upper parcel, forms the second supple buffer layer, (6) in the second supple buffer layer, dislocation parcel is sticky establishes large size arc cellucotton mat and some fiber cotton blanket sticks, then at upper overall over range parcel laying high-strength degree stainless steel rhombus steel mesh, forms flexible buffer enhancement Layer, (7) interting sheathed pressure holding steel disc and steel loop on Limit screw exposed junction wherein, in addition reliably spacing with check sheet after compacting, and by spacing for the edge steel wire lashing of the stainless steel rhombus steel mesh be wrapped on vertical pipe or tube panel and horizontal pipe or tube panel, form flexible sealing matrix, (8) last, flexible sealing outer surface of matrix is smeared and establishes coating castable refractory, form shell protective layer.
During work, sealing basal layer parcel in described flexible sealing matrix sticks in described in vertical pipe arranged in a crossed manner or around pore junction tube panel and horizontal pipe or tube panel and furnace roof having been made encapsulation process really up to the mark, works the basic transition adhesion and preliminary cushioning effect filling up and join corner, the soft net of described Ni-Cr-Mn is separately positioned on the first supple buffer layer and the second supple buffer layer outer surface, has under the traction position-limiting action of Limit screw, promotes that the first supple buffer layer and the second supple buffer layer absorb and cushion effect of multi-faceted displacement stress, described high-strength stainless steel rhombus steel mesh covers comprehensively and is installed on flexible buffer enhancement Layer outer surface, there is comprehensive traction spacing, guarantee the overall integrity of flexible sealing matrix and absorb further and digest through first, the function of the residual displacement stress after the second supple buffer layer, make inevitably to occur when being worked by gas pipeline expand with heat and contract with cold and cause all can effectively be cushioned and be absorbed with furnace roof complexity each of junction to displacement stress at vertical pipe and horizontal pipe, thus guarantee reliable sealing performance and the boiler overall longer seal operation life-span at boiler top complexity handing-over position.
The present invention based on above-mentioned design has the furnace roof leakproof seal technology absorbing multi-faceted stress function, because sealing matrix includes by fiber cotton blanket, the soft net of Ni-Cr-Mn, stainless steel rhombus steel mesh, the sealing basal layer that spacing fixation kit and high-temperature adhesives are formed, first supple buffer layer, second supple buffer layer, flexible buffer enhancement Layer and shell protective layer, and fiber cotton blanket is arranged to bar, the form of block and arc-like sheet, be arranged to will the most easily produce the vertical pipe of secondary leakage point or tube panel and horizontal pipe or the tube panel skin formula with the reliable environmental sealing of furnace roof complexity junction surface integral in boiler running process, make junction produce no matter be vertical direction, horizontal direction or pipeline any to elimination of transposition stress all by sealing Matrix absorption and buffering, sealing matrix can not produce any leakage-gap or crack, outwards distributing of the heat effectively preventing the point of the secondary leakage within the scope of parcel likely to cause and flue gas, thus it is poor to efficiently solve the containment member functional reliability arranged in the complicated junction that pipeline monitor is arranged at boiler top for a long time, the a great problem that working life is short, overcoming tradition adopts rigid containment expansion fashion to arrange the wideless shortcoming of work applicable surface existing for containment member, fully demonstrate the outstanding advantages with the flexible sealing matrix of the sealing means of Dynamic Absorption expansion displacement stress function that the present invention is arranged, for guaranteeing the long-term reliability service continuously of boiler, the number of times of minimizing sealing maintenance and more novel sealing, reduce daily maintenance cost and make outstanding contribution.
In addition, of the present invention have in the furnace roof leakproof seal technology absorbing multi-faceted stress function comprise flexible sealing matrix and method to set up thereof, doing to be equally applicable to stretch after adaptability simplifies the sealing and anti-leakage construction being placed in single piece of metal pipeline on furnace roof or many neat metallic conduits arranged in a row as required, can obtain than existing furnace roof leak proof technology better leakproof seal effect, longer working life and lower construction cost.
Accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of the embodiment of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
In figure:
1. flexible sealing matrix 11. seals basal layer 12. first supple buffer layer
13. second supple buffer layer 14. flexible buffer enhancement Layer 15. shell protective layers
2. fiber cotton blanket 21. fiber cotton blanket bar 22. fiber cotton blanket stick 23. arc cellucotton mat
231. large size arc cellucotton mat 232. medium size arc cellucotton mat
233. small size arc cellucotton mat 3. Ni-Cr-Mn soft net 4. stainless steel rhombus steel mesh
5. spacing fixation kit 51. Limit screw 52. pressure holding steel disc 53. steel loop
6. shell protective layer.
Detailed description of the invention
Below in conjunction with accompanying drawing and exemplary embodiments, the invention will be further described.
In fig. 1 and 2, of the present invention have the furnace roof leakproof seal technology absorbing multi-faceted stress function and mainly comprise flexible sealing matrix and method to set up thereof, it is characterized in that described flexible sealing matrix 1 bonding is arranged on displacement stress more complicated, the vertical pipe of easy generation secondary leakage or tube panel and horizontal pipe or tube panel infall and join in the rated range around corner with furnace roof, there is all clean rigidity matrix surfaces in comprehensive parcel rated range, and the function of skin formula bonding can be produced with it, include by fiber cotton blanket 2, the soft net 3 of Ni-Cr-Mn, stainless steel rhombus steel mesh 4, spacing fixation kit 5, the sealing basal layer 11 that high-temperature adhesives and castable refractory are formed, first supple buffer layer 12, second supple buffer layer 13, flexible buffer enhancement Layer 14 and shell protective layer 15, wherein:
2, described fiber cotton blanket is thick is 15-25 millimeter, include be longer than pipe circumference length fiber cotton blanket bar 21, wider than spacing between pipes fiber cotton blanket stick 22 and with the specified parcel height on pipeline or length be radius, arc range is the large size arc cellucotton mat 231 of 240 °-360 °, the arc cellucotton mat 23 of medium size arc cellucotton mat 232 and small size several different arcwall face specifications of arc cellucotton mat 233;
Described spacing fixation kit 5 includes the Limit screw 51 of band pawl, pressure holding steel disc 52, steel loop 53 and check sheet 54;
Method to set up is as follows: (1) vertical pipe or tube panel and horizontal pipe or tube panel infall and with furnace roof join to demarcate flexible sealing matrix 1 around corner scope is set, (2) on the furnace roof in calibration range, vertical pipe and horizontal pipe, vertical welding arranges some Limit screws 51, (3) enclose sticky filling out in every root pipeline and furnace roof junction with described high-temperature adhesives to establish described fiber cotton blanket bar 21, superpose with described high-temperature adhesives on the surface at the furnace roof of each pipeline enclosure of vertical pipe or tube panel and horizontal pipe or tube panel and stickyly establish some fiber cotton blanket sticks 22, form and seal basal layer 11, (4) the spacing stickup of central part of described small size arc cellucotton mat 233 is arranged on adjacent described vertical pipe or tube panel and horizontal pipe or tube panel and furnace roof intersect corner furnace roof on the surface, and both sides cambered surface is extended respectively, parcel is sticky to be located on sealing basal layer 11 on vertical pipe or tube panel and horizontal pipe or tube panel and pipeline external surface, and fill up as required and add sticky some fiber cotton blanket sticks 22, make the infall of vertical pipe or tube panel and horizontal pipe or tube panel and with the junction of furnace roof around be all in the complete parcel of small size arc fiber cotton blanket 233 and fiber cotton blanket stick 22, the soft net 3 of one deck Ni-Cr-Mn is covered again at upper parcel, form the first supple buffer layer 12, (5) in the first supple buffer layer 12, dislocation parcel is sticky establishes medium size arc cellucotton mat 232 and some fiber cotton blanket sticks 22, then covers the soft net 3 of one deck Ni-Cr-Mn at upper parcel, forms the second supple buffer layer 13, (6) in the second supple buffer layer 13, dislocation parcel is sticky establishes large size arc cellucotton mat 231 and some fiber cotton blanket sticks 22, then at upper overall over range parcel laying high-strength degree stainless steel rhombus steel mesh 4, forms flexible buffer enhancement Layer 14, (7) interting sheathed pressure holding steel disc 52 and steel loop 53 on Limit screw 51 exposed junction wherein, in addition reliably spacing with check sheet 54 after compacting, and by spacing for the edge steel wire lashing of the stainless steel rhombus steel mesh 4 be wrapped on vertical pipe or tube panel and horizontal pipe or tube panel, form flexible sealing matrix 1, (8) last, flexible sealing matrix 1 outer surface is smeared and establishes coating castable refractory, form shell protective layer 15.
During work, sealing basal layer 11 parcel in described flexible sealing matrix 1 sticks in described in vertical pipe arranged in a crossed manner or around pore junction tube panel and horizontal pipe or tube panel and furnace roof having been made encapsulation process really up to the mark, works the basic transition adhesion and preliminary cushioning effect filling up and join corner, the soft net 3 of described Ni-Cr-Mn is separately positioned on the first supple buffer layer 12 and the second supple buffer layer 13 outer surface, has under the traction position-limiting action of Limit screw 51, promotes that the first supple buffer layer 12 and the second supple buffer layer 13 absorb and cushion effect of multi-faceted displacement stress, described high-strength stainless steel rhombus steel mesh 4 covers comprehensively and is installed on flexible buffer enhancement Layer 14 outer surface, there is comprehensive traction spacing, guarantee the overall integrity of flexible sealing matrix 1 and absorb further and digest through first, the function of the residual displacement stress after the second supple buffer layer, make inevitably to occur when being worked by gas pipeline expand with heat and contract with cold and cause all can effectively be cushioned and be absorbed with furnace roof complexity each of junction to displacement stress at vertical pipe and horizontal pipe, thus guarantee reliable sealing performance and the boiler overall longer seal operation life-span at boiler top complexity handing-over position.
Claims (2)
1. one kind has the furnace roof leakproof seal technology absorbing multi-faceted stress function, mainly comprise flexible sealing matrix (1) and method to set up thereof, it is characterized in that described flexible sealing matrix (1) bonding is arranged on displacement stress more complicated, the vertical pipe of easy generation secondary leakage or tube panel and horizontal pipe or tube panel infall and join in the rated range around corner with furnace roof, there is all clean rigidity matrix surfaces in comprehensive parcel rated range, and the function of skin formula bonding can be produced with it, include by fiber cotton blanket (2), the soft net of Ni-Cr-Mn (3), stainless steel rhombus steel mesh (4), the sealing basal layer (11) that spacing fixation kit (5) and high-temperature adhesives are formed, first supple buffer layer (12), second supple buffer layer (13), flexible buffer enhancement Layer (14) and the shell protective layer (15) be made up of castable refractory, wherein:
Described fiber cotton blanket (2) sheet is thick is 15-25 millimeter, include be longer than pipe circumference length fiber cotton blanket bar (21), wider than spacing between pipes fiber cotton blanket stick (22) and with the specified parcel height on pipeline or length be radius, arc range is large size arc cellucotton mat (231) of 240 °-360 °, the arc cellucotton mat (23) of medium size arc cellucotton mat (232) and small size several different arcwall face specifications of arc cellucotton mat (233);
Described spacing fixation kit (5) includes the Limit screw (51) of band pawl, pressure holding steel disc (52), steel loop (53) and check sheet (54);
Method to set up is as follows:
Vertical pipe or tube panel and horizontal pipe or tube panel infall and with furnace roof join to demarcate flexible sealing matrix (1) around corner scope is set;
(2) on the furnace roof in calibration range, vertical pipe and horizontal pipe, vertical welding arranges some Limit screws (51);
(3) enclose sticky filling out in every root pipeline and furnace roof junction with described high-temperature adhesives to establish described fiber cotton blanket bar (21), superpose with described high-temperature adhesives on the surface at the furnace roof of each pipeline enclosure of vertical pipe or tube panel and horizontal pipe or tube panel and stickyly establish some fiber cotton blanket sticks (22), form and seal basal layer (11);
(4) the spacing stickup of central part of described small size arc cellucotton mat (233) is arranged on adjacent described vertical pipe or tube panel and horizontal pipe or tube panel and furnace roof intersect corner furnace roof on the surface, and both sides cambered surface is extended respectively, parcel is sticky to be located on sealing basal layer (11) on vertical pipe or tube panel and horizontal pipe or tube panel and pipeline external surface, and fill up as required and add sticky some fiber cotton blanket sticks (22), make the infall of vertical pipe or tube panel and horizontal pipe or tube panel and with the junction of furnace roof around be all in the complete parcel of small size arc fiber cotton blanket (233) and fiber cotton blanket stick (22), the soft net of one deck Ni-Cr-Mn (3) is covered again at upper parcel, form the first supple buffer layer (12),
(5) glue at the upper dislocation parcel of the first supple buffer layer (12) and establish medium size arc cellucotton mat (232) and some fiber cotton blanket sticks (22), then cover the soft net of one deck Ni-Cr-Mn (3) at upper parcel, form the second supple buffer layer (13);
(6) glue at the upper dislocation parcel of the second supple buffer layer (13) and establish large size arc cellucotton mat (231) and some fiber cotton blanket sticks (22), again upper overall over range parcel laying high-strength degree stainless steel rhombus steel mesh (4), form flexible buffer enhancement Layer (14);
(7) interting sheathed pressure holding steel disc (52) and steel loop (53) on Limit screw (51) exposed junction wherein, in addition reliably spacing with check sheet (54) after compacting, and by spacing for the edge steel wire lashing of the stainless steel rhombus steel mesh (4) be wrapped on vertical pipe or tube panel and horizontal pipe or tube panel, form flexible sealing matrix (1);
(8) last, flexible sealing matrix (1) outer surface is smeared and establishes coating castable refractory, form shell protective layer (15).
2. according to claim 1 have the furnace roof leakproof seal technology absorbing multi-faceted stress function, sealing basal layer (11) parcel that it is characterized in that in described flexible sealing matrix (1) sticks in described in vertical pipe arranged in a crossed manner or around pore junction tube panel and horizontal pipe or tube panel and furnace roof having been made encapsulation process really up to the mark, works the basic transition adhesion and preliminary cushioning effect filling up and join corner, the soft net of described Ni-Cr-Mn (3) is separately positioned on the first supple buffer layer (12) and the second supple buffer layer (13) outer surface, has under the traction position-limiting action of Limit screw (51), promotes that the first supple buffer layer (12) and the second supple buffer layer (13) absorb and cushion effect of multi-faceted displacement stress, described high-strength stainless steel rhombus steel mesh (4) covers comprehensively and is installed on flexible buffer enhancement Layer (14) outer surface, there is comprehensive traction spacing, guarantee the overall integrity of flexible sealing matrix (1) and absorb further and digest through first, the function of the residual displacement stress after the second supple buffer layer, make inevitably to occur when being worked by gas pipeline expand with heat and contract with cold and cause all can effectively be cushioned and be absorbed with furnace roof complexity each of junction to displacement stress at vertical pipe and horizontal pipe, thus guarantee reliable sealing performance and the boiler overall longer seal operation life-span at boiler top complexity handing-over position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681417.9A CN104406154B (en) | 2014-11-25 | 2014-11-25 | A kind of have the furnace roof leak-proof sealing device absorbing multi-faceted stress function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681417.9A CN104406154B (en) | 2014-11-25 | 2014-11-25 | A kind of have the furnace roof leak-proof sealing device absorbing multi-faceted stress function |
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| Publication Number | Publication Date |
|---|---|
| CN104406154A true CN104406154A (en) | 2015-03-11 |
| CN104406154B CN104406154B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410681417.9A Expired - Fee Related CN104406154B (en) | 2014-11-25 | 2014-11-25 | A kind of have the furnace roof leak-proof sealing device absorbing multi-faceted stress function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979536A (en) * | 2017-04-27 | 2017-07-25 | 上海岱山电力科技股份有限公司 | A kind of simple durable type boiler top sealing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002174401A (en) * | 2000-12-08 | 2002-06-21 | Babcock Hitachi Kk | Membrane panel structure for furnace wall of boiler |
| JP2004060983A (en) * | 2002-07-29 | 2004-02-26 | Nippon Steel Corp | Supporting structure of boiler horizontal heat transfer tube |
| CN101315182A (en) * | 2007-06-01 | 2008-12-03 | 过典正 | Sealing method for combination part of pipe and boiler body |
| CN202993160U (en) * | 2012-12-26 | 2013-06-12 | 王剑 | Flexible sealing device of power station boiler body |
| CN203036617U (en) * | 2012-12-25 | 2013-07-03 | 华润电力登封有限公司 | Furnace top sealing structure |
-
2014
- 2014-11-25 CN CN201410681417.9A patent/CN104406154B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002174401A (en) * | 2000-12-08 | 2002-06-21 | Babcock Hitachi Kk | Membrane panel structure for furnace wall of boiler |
| JP2004060983A (en) * | 2002-07-29 | 2004-02-26 | Nippon Steel Corp | Supporting structure of boiler horizontal heat transfer tube |
| CN101315182A (en) * | 2007-06-01 | 2008-12-03 | 过典正 | Sealing method for combination part of pipe and boiler body |
| CN203036617U (en) * | 2012-12-25 | 2013-07-03 | 华润电力登封有限公司 | Furnace top sealing structure |
| CN202993160U (en) * | 2012-12-26 | 2013-06-12 | 王剑 | Flexible sealing device of power station boiler body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979536A (en) * | 2017-04-27 | 2017-07-25 | 上海岱山电力科技股份有限公司 | A kind of simple durable type boiler top sealing device |
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| CN104406154B (en) | 2016-03-30 |
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